Friday

August 29, 2014

August 29, 2014

Posted by **Dell** on Thursday, December 1, 2011 at 11:29am.

a.What is the ratio of blue buttons to purple buttons at the beginning of the year?

b.After Marnie adds another 200 buttons –some red and some blue – at the end of the year, the number of red buttons increased by 75% and the number of blue buttons increased by two-thirds.

i.What is the new ratio of red buttons to blue buttons?

ii.Express the number of purple buttons as a fraction of the new total number of buttons.

iii.Express the number of blue buttons as a percentage of the number of red buttons. (Round to one decimal place).

- math -
**Steve**, Thursday, December 1, 2011 at 12:38pmso, we have red:blue:purple = 4:3:2

4+3+2=9, so there are 360/9 buttone for each proportion:

160 red

120 blue

80 purple

b:p = 3:2

after new buttons, we have

red: 160 (1.75) = 280

blue: 120(5/3) = 200

purple: 80

r:b = 280:200 = 7:5

p/all = 80/560 = 1/7

b/r = 200/280 = 5/7 = 71.4%

- math -
**Anonymous**, Monday, December 5, 2011 at 10:33amI'm confused on where you got the 1.75 and the 5/3????

**Related Questions**

NEED HELP drawing a visual for this question - Marnie collects red, blue and ...

math - Tammy had 900 red and blue buttons in a big box. 30% of them were blue ...

math - justine has 162 red buttons,98 blue buttons,and 284 green buttons. she ...

3rd grade math - write an expression. then write a number sentence and solve. ...

Math - A bag of buttons contains 3 red, 4 orange, 7 green and 10 blue battens. ...

Math - A bag of buttons contains 3 red, 4 orange, 7 green and 10 blue battens. ...

math - A bag of buttons contains 3 red, 4 orange, 7 green and 10 blue battens. ...

math - peter has 3 different kinds of buttons in one box. there are 124 more ...

MATH PLEASE HELP!!!!! - There are 36 buttons in a jar. There are 3 times as many...

math - There are 36 buttons in a jar. There are 3 times as many red buttons as ...