- A15 days
- B12 days
- C18 days
- D20 days
Step-by-Step Solution
A alone: 20 days. In 3 days A does , so B does in 3 days: B alone 20 days.
Answer: D) 20 days
A completes 7/10 of a work in 14 days and then, with B's help, finishes the rest in 3 days. How long would B alone take to do the whole work?
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