Question

A and B can do a given piece of work in 8 days B and C can do same work in 12 days and a b c complete it in 6 days in how many days can a and c finish it​

Answer 1

Answer:

8 days

Step-by-step explanation:

1/a + 1/b = 1/8

1/b + 1/c = 1/12

1/a + 1/b + 1/c = 1/6

2[1/a + 1/b + 1/c] =2[1/6] =1/3

[1/a + 1/b] + [1/b + 1/c] + [1/c + 1/a] = 1/3

1/8 + 1/12 + [1/a + 1/c] = 1/3

1/a + 1/c = 1/3 - 5/24 = 1/8