1 . If Masud can do a job in P days, while Minhaz can do the same job in Q days separately, how long will it take to finish the job if they work together?

• A. (P+Q)/PQ days
• B. PQ/(P+Q) days
• C. (P+Q) days
• D. (1/P + 1/Q) days

Answer: Option B

Explanation: