A, B and C together can complete a work in 18 days. A and B together can complete the same work in 24 days. C alone can complete the same work in how many days?
Show answer & explanation
Correct answer: A
Explanation
(A+B+C)'s 1-day work = 1/18
(A+B)'s 1-day work = 1/24
C's work = 1/18 - 1/24
= (4-3)/72
= 1/72
C working alone will take = 72 days