- A6
- B12.5
- C5
- D7.5
Step-by-Step Solution
Ramesh does 1/10 and Suresh 1/15 of the wall per day. Together: 1/10 + 1/15 = 3/30 + 2/30 = 1/6, so they need 6 days.
Answer: A) 6
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