1.

3 boys or 4 girls can clean a compound in 8 hours.In how many hours will 3 boys and 2 girls clean the same compound?

Answer»

Answer:

In 5 HOURS 7 minutes because

3 boys N 4 girls that is 7 in total can clean the compound in 8hrs

Like this 3 boys and 2 girls that is 5 in total can clean the same compound;

7 PEOPLE = 8 hrs

5 people = X

X = 5 * 8 / 7

= 5 hours and 7 minutes



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