'A' can complete a piece of work in 12 days. 'A' and 'B' together can complete…
2023
'A' can complete a piece of work in 12 days. 'A' and 'B' together can complete the same piece of work in 8 days. In how many days can 'B' alone complete the same piece of work ?
- A.
15 days
- B.
18 days
- C.
24 days
- D.
28 days
Attempted by 72 students.
Show answer & explanation
Correct answer: C
Answer: 24 days
Reason:
A's work in one day = 1/12.
A and B together in one day = 1/8.
B's work in one day = (A+B) − A = 1/8 − 1/12 = 1/24.
Therefore B alone completes the work in 24 days.