Question

7 men and 3 women they both together do a work in 10 days and 8 men and 2 women can do same work in 8 days. what is the work efficiency of 12 men in a day​

Answer 1

Answer:

4 days

Step-by-step explanation:

let the mens be x and womens be y.

7x + 3y = 10

8x + 2y = 8

now,

try the make one of them at same position.

by, multiplying first equation by 2 and second equation by 3

then we get equations as,

14x + 6y = 20

24x + 6y =24

--------------

equate then and you will 10x = 4

which means than 10 mens complete the work in 4 days.