- A18
- B12
- C36
- D24
Step-by-Step Solution
Let B's rate be ; A's rate is , so giving . A's rate = 2/36 = 1/18, so A alone takes 18 days.
Answer: A) 18
A is twice as efficient as B, and together they finish a work in 12 days. In how many days can A alone finish the work?
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