- A31.2
- B65
- C26
- D36
Step-by-Step Solution
Combined rate = 1/52 + 1/78 = (3 + 2)/156 = 5/156 per day, so they need 156/5 = 31.2 days.
Answer: A) 31.2
Two carpenters, Salim and Joseph, can each make a set of wardrobes alone in 52 days and 78 days respectively. Working together, how many days will they take?
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