the number of boys and girls in a class are in the ratio 5 : 3 the number of girls is 10 more than the number of boys what is the class strength
Answers
Step-by-step explanation:
Let the common ratio between number of boys and girls be x
Number of boys =7x
Number of girls =5x
As per the question,
Number of boys = Number of girls +8
7x=5x+8
Transpose 5x to LHS, we will get
7x−5x=8
2x=8
Divide both sides by 2
x=4
No. of boys =7x=7×4=28
No. of girls =5x=5×4=20
Total class students 28+20=48
The number of boys and girls in a class are in the ratio 5 : 3 the number of girls is 10 more than the number of boys what is the class strength.
Given ;
The number of boys and girls in a class are in the ratio 5 : 3 .
=
So let the boys strength be = 5x
And let the girls strength be = 3x
Given ;
The number of girls is 10 more than the number of boys .
Number of boys = Number of girl × 10
Therefore ;
Number of boys = 5x = 5(5) = 25
Number of girls = 3x = 3(5) = 15
Total class strangth = Number of boy + Number of girl