Regjanuar27viz
Answered

The ratio of boys and girs in the class of 50 is 7:3.How many boys are there?

Sagot :

Chezen21viz
this is the solution:

7x+3x=50
10x=50
10x/10=50/10
x=5

then you should substitute 5 to x to get the number of boys students:

7(5)=?
7(5)=35

therefore there are 35 boys in a class