Question

12 boysand 16 girls can do a piece of work in 10 days while 13 boys and 24 girls can do same work in 8 days. Find the time taken by 15 boys and 20 girls to do the same work.

Answer 1

Answer:

6 days

Explanation:

bcoz 12boys n 16 girls takes 10 days n 13boysn 24 girls take 8days

Answer 2

Answer:

Time taken by 15 boys and 20 girls to do the same work is 8 days

Explanation:

Suppose 1 boy’s 1 day’s work = x and 1 girl’s 1 day’s work= y

Therefore, 12x + 16 y= 1/10 and 13x + 24y = 1/8

After solving the equation for the value of x and y, we will get x= 1/200 and y= 1/400

Days taken by 15 boys and 20 girls will be, (15/200 + 20/400) = 30+50/400 = 1/8

Days taken by 15 boys and 20 girls will be 8 days.