7. There are 42 pupils in a class. 12 of them are Malays while the rest are Chinese. 1/4 of the boys and 12 of the girls are Malay. How many boys
are there in the class?

I NEED THIS ASAP!!!

There are 36 boys in the class.

Step-by-step explanation:

This question is solved by a system of equations.

I am going to say that:

x is the number of boys

y is the number of girls.

There are 42 pupils in a class.

This means that .

Since we want x, we have that

12 of them are Malays while the rest are Chinese. 1/4 of the boys and 1/2 of the girls are Malay.

This means that:

Since

Multiplying everything by 4.

There are 36 boys in the class.

y > 1/3x

y < = -x + 4

hope this : )