Question

the number of boys and girls in a class are in the 7 ratio 5 the number of boys is 8 more than the number of girls what is the total class strength?​

Answer 1

Answer:

48 is the answer

7x-5x =8

2x=8

x=4

then7x= 7×4=28

5x= 5×4=20

28+20=48

Answer 2

Answer:

let the no . of boys be 7x and that of girls be 5x

no . of boys = no . of girls + 8

7x = 5x +8

7x - 5x = 8. ( transposing 5x to LHS )

2x = 8

x = 8 / 2

x = 4

no . of boys = 7 × 4 = 28

no . of girls = 5 × 4 = 20

total no . of children in the class 28 + 20 = 48

the class strength is 48

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