Sunday

January 25, 2015

January 25, 2015

Posted by **jo** on Sunday, August 21, 2011 at 7:16am.

How many pupils are there in the class?

How many sweets does Mr Neo have?

- Maths P5 -
**Henry**, Sunday, August 21, 2011 at 10:22pmX = The total # of sweets.

Y = The total # of pupils.

Eq1: x - 3y = 70.

Eq2: x -5y = -10.

Subtract Eq1 from Eq2 and get:

2y = 80,

Y = 40 Pupils.

In Eq1, substitute 40 for Y:

x - 3*40 = 70,

x - 120 = 70,

X = 70 + 120 = 190 Sweets.

**Answer this Question**

**Related Questions**

word problem - Rahim has 5 boxes of sweets.Each box contains y sweets.His ...

Maths - John has some sweets to give to his friends. If he gives 4 sweets to his...

MATH - The ratios of the number of sweets Abigail has to the number of sweets ...

math - The owner of a candy store packs all of the sweets from a box into ...

math - Alvin, Calvin and Melvin each have some positive integer number of sweets...

algebra - Alvin, Calvin and Melvin each have some positive integer number of ...

algebra - Alvin, Calvin and Melvin each have some positive integer number of ...

maths - On children's day, a teacher brought 63 erasers and 147 sweets to ...

math,(fraction) - Becky bought 25kg of sweets.she kept 1kg of sweets for her use...

algebra... - In a school, there are 4 more students in Class A than in Class B, ...