Q. A completes a work in 16 days. After working for 8 days, B joins him and they finish the remaining work in 4 days. B alone can complete the work in:
✅ Correct Answer: (B)
16 days
Explanation: Half work remains after 8 days. Together complete half work in 4 days, so combined rate = 1/8. B's rate = 1/8 - 1/16 = 1/16.
Explanation by: Deepak Sahoo
Half work remains after 8 days. Together complete half work in 4 days, so combined rate = 1/8. B's rate = 1/8 - 1/16 = 1/16.