Question

3 men and 4 women can do a piece a work in 12 das, 5 women and 7 cildren can do in 8 days. In how many days can 9 men and 22 women and 14 children together do the same work ?

Answer 1

3M+4W=12; 5W+7C=8;
9M+22W+14C=3(3M+4W)+2(5W+7C)
=3×12+2×8
=36+16
=52