- A12
- B15
- C10
- D18
Step-by-Step Solution
Imran does 1/30 per day; Hari does per day. Together 1/30 + 1/20 = 5/60 = 1/12 per day, so 12 days.
Answer: A) 12
Hari is 50% more efficient than Imran. Imran alone can build a fence in 30 days. Working together, in how many days will they build it?
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