# Da S

Popular questions and responses by Da S-
## math,(fraction)

during school holidays, Chris read 312 pages of a book at first.he read the remaining pages in 20days, w/ the same number of pages each day. during these 20days, he read one-twelve of the book in 6days.how many pages of the book did he read in the 6days?

*asked on December 27, 2011* -
## math word problem(fraction)

Chris read 312 pages of a book at first.he read the remaining pages in 20 days,w/ de same number of pages each day.during these 20 days,he read one-twelveth(1over12) of de book in 6days.how many pages of de book did he read in de 6days? Help me..

*asked on December 8, 2011* -
## math,(fraction)

there were 25pupils in a class. they had 135 books altogether. two-fifth of the pupils were girls.they had the same number of books each. the remaining pupils were boys.each boy had one-third as many as each girl.how many books did each girl have?

*asked on December 27, 2011* -
## math,(fraction)

Mr Lim put some red pens and blue pens into a box.The ratio of the number of red pens to the number of blue pens was 3:4. He added 20 red pens into the box and the ratio became 2:1. a. were there more red pens or blue pens in the box at the end? b. how

*asked on February 2, 2012* -
## math,(fraction)

Adam and Rahmad shared some beads.if Adam gave one-third of his share to Rahmad,Rahmad would have 70 more than Adam.if Adam gave one-fifth of his share to rahmad,Rahmad would have 10 more Adam.how many beads does Adam have at first?

*asked on December 27, 2011* -
## math

harun and kuna competed in a 200-m race.harun ran at a speed of 5 m/s.kuna ran at a speed of 8 m/s.if they started at the same time, a.find the time kuna took to reach the finishing line. b.how far was kuna from harun when kuna reached the finishing line?

*asked on March 18, 2012* -
## Math,Ratio

a chef uses salt and sugar in the ratio 2:7 to make a sauce.if the chef uses 129.5g of sugar,how much salt does he use? show ur answer clearly pls

*asked on December 27, 2011* -
## Math,Ratio

the ratio of the mass of flour in packet A to the mass of of flour in packer B is 1:2.Mrs Anand uses 1/3 of the flour in packet A.What is the new ratio of the mass of folur in packet A to the mass of flour in packet B? pls give ur answer clearly

*asked on February 2, 2012* -
## Physics

A piece of copper with mass 2.5kg is heated from 30degree celcius to 80degree celcius. 50000 Joule of thermal energy is needed.What is the heat capacity of the piece of copper? What is the specific heat capacity of the piece of copper?

*asked on October 23, 2012* -
## Math

Mrs Leong took 1 hour to drive 1/5 of a journey from village R to village S.she drove the remaining 180km in 4hr. A) what was Mrs Leong's speed for the first part of the journey? B) how long did she take to travel the whole journey? C) find Mrs Leong's

*asked on March 26, 2012* -
## math,(fraction)

a total of 9liters of orange syrup was poured equally into 6 jugs. Susan poured 2/5 liters of orange syrup from a jug into a glass and drank it.she found the syrup too sweet,so she added 4/5 liters of water into the jug she had.find the total amount of

*asked on December 27, 2011* -
## Physics

If the time taken to melt 10g of ice at 0 degree Celsius is 1 minute, how long will it take to vaporize 10g of water at 100 degree celsius using the same heater? Pls show the solution clearly. Thanks

*asked on November 15, 2012* -
## Math

Mr Roberts drove a distance of 118km from city X to city Y. At first,he drove at a speed of 60 km/h. Then he drove for 1 1/4hr to city Y,covering a distance of 70km. If Mr Roberts left city X at 1400, at what time did he arrive at city Y?

*asked on March 26, 2012* -
## Math

A motorist took a total of 4hr to drive from town A to town C. He took 1hr to travel from town A to town B,which is between town A & town C. The distance between town B & town C is 11/15 of the distance between town A and town C. If the total distance

*asked on March 26, 2012* -
## Math

Fauzia took 30min to cycle from her house to the cinema. If she cycled the first 3km of the journey at a speed of 150m/min, find her average speed for the remaining 3km of the journey

*asked on March 26, 2012* -
## math

a boat travel for 4hr from pole a to pole b.then it travel for 3hr from pole b back to pole a.the distance between the two poles was 40km a.find the total time taken for the whole journey b.find the average speed for the whole journey

*asked on March 20, 2012* -
## math

pei fen walked a distance of 526 m.then she walked for another 5minutes at a speed of 70m/min.she took a total of 12 min to walk the entire distance. A.find the total distance that pei fen walked b.what was pei fen's average speed for the whole journey?

*asked on March 20, 2012* -
## math

lisa began her journey from home at 1350 and reached her destination at 1415. A.how long did she take for the whole journey? B.if the total distance taken was 45 km,find her speed.

*asked on March 18, 2012* -
## math

Da Ming walks from his school to his house at a speed of 5km/h.he takes 20 minutes to reach home.what is the distance between his school&his house? Convert the time from minutes to hour and correct to 2 decimal places

*asked on March 18, 2012* -
## percentage

Amit bought a pair of pants for 45$.he had to pay 7% GST. a)how much GST did Amit pay? b)how much did Amit pay for the pair of pants?

*asked on February 12, 2012* -
## percentage

Karen took 1h 45m to drive from town a to town b.she took another 25m to drive town b to town c.after that,she drove back to town a.the journey from town a to town c and then back to town a took 3h 35m. find the percentage of the time she spent driving

*asked on February 12, 2012* -
## percentage

Sharil is cycling from his house to Jeju Island,which are 15km apart.If Sharil has cycled a distance of 9.5km,what percentage of the total distance does he have left? pls round off ur answer to 1 decimal place

*asked on February 12, 2012* -
## percentage

A jug contained 780ml of milk.Mrs Li poured 221ml of the milk into a glass and 130ml into a cup.what percentage of milk was left in the jug?pls give ur answer clearly

*asked on February 11, 2012* -
## percentage

Evelyn has a ribbon 420cm long.She uses 216cm to decorate a present.what percentage of the ribbon is left?Express your answer correct to 1 decimal place

*asked on February 11, 2012* -
## percentage

Choon yong was asked to paint a wall of area 84 meter square.In one hour,he had painted 21meter square. a)what percentage of the wall was left unpainted?

*asked on February 11, 2012* -
## Math,Ratio

the ratio of the number of coins Azam had to the number of coins Eddie had was 3:7.Eddie gave 42 coins to Azam and they ended up having the same number of coins.how many coins did each person have at first? pls show ur answer purely!

*asked on February 3, 2012* -
## Math,Ratio

the ratio of the number of coins Azam had to the number of coins Eddie had was 3:7.Eddie gave 42 coins to Azam and they ended up having the same number of coins.how many coins did each person have at first? pls sh

*asked on February 3, 2012* -
## Math,Ratio

the ratio of the number of marbles Zali had to the number of marbles Muthu had was 3:4.Muthu gave half of his marbles to Zali.what was the new ratio of the number of marbles Zali had to munber of marbles Muthu had? pls give your answer clearly

*asked on December 30, 2011* -
## Math,Ratio

a wire is bent into a rectangle.the ratio of the length of the rectangle to its breadth is 9:5.if the total length of the wire is 84cm,find the area of the rectangle formed by the wire

*asked on December 30, 2011* -
## Math,Ratio

Mrs Koh bought some tuna and sardine from a fishmonger.the ratio of the mass of tuna to the mass of sardine was 1:2.if she bought a total of 12kg of fishes,find the mass of each type of fish that she bought

*asked on December 30, 2011* -
## Math,Ratio

a sum of money is shared between Alice,Gahya&Sita in the ratio 3:2:4.if Gahya receives $4287.50,how much money do Alice and sita receive altogether?

*asked on December 30, 2011* -
## Math,Ratio

Mrs Rama uses 0.4 liters of watermelon juice for every 0.9 liters of apple juice to make a jug of mixed fruit juice. a) for 225 ml of apple juice,how much watermelon juice should Mrs Rama use? b) if Mrs Rama uses 80 ml of watermelon juice,how much apple

*asked on December 28, 2011* -
## Math,Ratio

mr kim mixes cement&sand to make a mixture.he uses 2 pails of cement for every 5 pails of sand. a) if he uses 24 pails of cement,how many pails of sand does he use? b) if he uses 35 pails of sand,how many pails of cement does he use?

*asked on December 28, 2011* -
## math,(fraction)

Becky bought 25kg of sweets.she kept 1kg of sweets for her use and packed the remaining sweets equally into some packets to distribute among some children.each packet contained 1/2kg of sweets.if each child received one packet of sweets,how many children

*asked on December 27, 2011* -
## math,(fraction)

Susan had some money. she spent one-sixth of her money on Saturday.on Sunday,she spent one-half of the remaining money and gave $20 to her niece. she spent the rest of her money at an average of $15 for the next 5days.how much money did Susan have at

*asked on December 27, 2011* -
## Math,Ratio

the length of a rectangle is 6times as long as its breadth. a.) what fraction of the perimeter of the rectangle is the length of the rectangle? b.) find the ratio of the length of the rectangle to its breadth and to its perimeter. c.) if the perimeter of

*asked on December 26, 2011* -
## Math,fraction word problem

a total of 9litres of orange syrup was poured equally into 6jug. Susan poured 2over5 litres of orange syrup from a jug into a glass&drank it.she found the syrup too sweet,so she added 4over5 litres of water into the jug she had.find the total amount of

*asked on November 3, 2011*