If 2 men or 3 women or 4 boys can do a piece of work in 52 days. Then the same piece of work will be done by 1 man, 1 woman and 1 boy in?

Work done by 2 men = 3 woman = 4 boys
∴ 1 man = 2 boys
1 woman = 4/3 boys
∴ boys X days = 4 X 52 (boys - days)
Again 1 man + 1 woman + 1 boy = 2 + 4/3 + 1 = 13/3 boys
B₁ x D₁ = B₂ x D₂ B = boys, D = days
4 X 52 = 13/3 x D₂
D₂ = 48 days