A, B and C together can complete a work in 8 days. A and B together can complete the same work in 10 days. C alone can complete (3/8) of the same work in how many days?
Show answer & explanation
Correct answer: D
Explanation
Work done by A, B, and C in one day = 1/8
Work done by A and B in one day = 1/10
Work done by C in one day =
= 1/8 - 1/10
= (5 - 4)/40
= 1/40
C will complete the entire work in 40 days.
Time taken by C to complete 3/8 of the work = 40 × 3/8 = 15 days