Question

Working individually, A takes 18 days, B takes 20
days and C takes 30 days to complete a work. If B
and C were engaged for first 2 days, in how many
days the rest of the work shall be completed by
engaging A alone?
(1) 12
(2) 13
(3) 14 (5) 15
(5) 16
​

Answer 1

Answer:

.167 work in 2 days remaining.833 A efficiency .05 so he takes 15 days

Step-by-step explanation:

1/10+1/15=1/6

5/6/1/18= 90/6 =15