Question

a piece of work can be done by 6 men and 5 women in 6 days or 3 men and 4 women in 10 days it can be done by 9 men and 15 women​

Answer 1

Answer:

To calculate the answer we need to get 1 man per day work and 1 woman per day work.

Let 1 man 1 day work =x

and 1 woman 1 days work = y. 

=> 6x+5y = 1/6 

and 3x+4y = 1/10 

On solving, we get x = 1/54 and y = 1/90 

(9 men + 15 women)'s 1 days work = 

(9/54) + (15/90) = 1/3 

9 men and 15 women will finish the work in 3 days