Q. A can do a job in 10 days. B here is 20% more efficient. Together will finish in?
✅ Correct Answer: (B)
5.5 days
Explanation: B=10/1.2=8.33 days → together=1/10+1/8.33 ≈1/5.5.
Explanation by: Ankit Singh
B=10/1.2=8.33 days → together=1/10+1/8.33 ≈1/5.5.