Question

A , b & c can complete a piece of work in 25, 30 & 40 days. They started the work together but a left 2 days before the completion of work & b left 4 days before the completion of work. In how many days the work would be completed?

Answer 1

Answer:

12 1/3 days

Step-by-step explanation:

let total work L.C.M(25,30,40)=600 units

A,B & C's efficiency is (600/25, 600/30,600/40) = 24 , 20 & 15 units per day .

let the work would be completed in x days

24 (x - 2) + 20(x -4) + 15x = 600

24x - 48 + 20x - 80 + 15x = 600

59x = 728 => x = 12 1/3 days