- A12
- B36
- C27
- D18
Step-by-Step Solution
Let Gopi's rate be ; Ravi's is , so and Gopi needs 36 days. (Ravi alone needs 12.)
Answer: B) 36
Ravi works three times as fast as Gopi. Together they complete a task in 9 days. How long would Gopi take alone?
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