Question

A and B can do a pice of work in 12 days B and C 15 days C and A in 20 days in how many days will they finish it together and separately​

Answer 1

Let A finish the work in x days

B in y days

And C in z days

Then,

1/x +1/y = 1/12

1/y + 1/z = 1/15

1/z + 1/x = 1/20

Solve these three equations to get your answer

Answer 2

Answer:

Step-by-step explanation: