Question

3 men and 2 boys do a piece of work in 4 days, while 7 men and 3 boys finish it 2 days.1 man will finish it in

Answer 1

Here I will use the concept of

Man*Days

(2m+3b) 10 = (3m+2b) 8

20m+30b = 24m+16b

14b = 4m

7b = 2m

So 2m = 7b

Now

(2m+3b) 10 = (2m+1b) x

(7b+3b) 10 = (7b+1b) x

10*10 = 8*x

X = 100/8

X = 12.5 days