- A20
- B24
- C18
- D36
Step-by-Step Solution
Let B's rate = , A's rate = . Together , so ; A's rate = 2/36 = 1/18, so A alone takes 18 days.
Answer: C) 18
A is twice as efficient as B. Working together they finish a piece of work in 12 days. How many days would A alone take to finish the work?
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