Mathematics · Time and Work
If A alone can complete a work in 20 days and B alone can complete the same work in 30 days, then which of the following statements is/are correct? I. Ratio of efficiency of A and B is 3 : 2. II. Working together A and B can complete the same work in 12 days.
- 1Neither I nor II
- 2Both I and II✓
- 3Only II
- 4Only I
Correct answer
Both I and II
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