Question

A, B and C can complete a work in 4 days, if A alone can complete a work in 12 days, B alone can complete a work in 18 days, in how many days C alone can complete a same work?​

Answer 1

Answer:

9 days

Step-by-step explanation:

1/4 = 1/12+ 1/18 +1/x

1/4 - 5/36 = 1/x

1/x = 4/36 =1/9

x = 9 days