10. The numberthe number of boys and girls in a class are the ratio 7 is to 5 the number of boys is 8 more than the number of girls what is the total class strength
Answers
Answered by
1
7x-5x=8
2x=8
x=4
Boys=4*7=28
Girls=4*5=20
Total=28+20=48
Answered by
0
☛ Question :-
The number of boys and girls in a class are the ratio 7 : 5. The number of boys is 8 more than the number of girls. What is the total class strength.
☛ Given :-
- The number of boys and girls in a class are the ratio 7 : 5
- The number of boys is 8 more than the number of girls.
☛ To Find :-
- The strength of the class.
☛ Solution :-
- Let number of boys = 7x
- And number of girls = 5x
Equation :- 7x = 5x + 8
⇒ 7x - 5x = 5x + 8 - 5x
⇒ 2x = 8
⇒ 2x/2 = 8/2
⇒ x = 4
Now,
7x = 4 × 7 = 28
5x = 5 × 4 = 20
- Number of boys = 28
- Number of girls = 20
➞ 28 + 20
➞ 48
∴ Total strength of class = 48 members
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