Question

X and Y can plough a field in 7/2 days.x and z in 4days.y and z in 5 days.if the all work together in how many days they can finish the work.​

Answer 1

Answer: 70/103 days

Step-by-step explanation:

1/X+1/Y can do the work in 2/7 days

1/X+1/Z can do the work in 1/4 days

1/Y+1/Z can do the work in 1/5 days

So, 2(1/X+1/Y+1/Z) = 103/70

Hence, all can do the work in 70/103 days