Question

One man, 3 women and 4 boys
can do a piece of work in 96
hours, 2 men and 8 boys can
do it in 80 hours, 2 men and 3
women can do it in 120 hours,
then 5 men and 12 boys can do
it in​

Answer 1

Step-by-step explanation:

so

-------- 1M+3W+4B=5 units

2M+8B =6 units

3M+3W =4 units

1×2-0

2m+6w+8b-2m-8b=10-6

(3w=2)

putting (3w=2)in eq (3)

2m+2=4

2m=2

(2m=2)

(m=2)

putting 5hese in eq. (1)

1+2+4b=5

(B=1/2)