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| Q.13 | Working 2 hours per day, R1 alone can complete a work in 6 days. Working 5 hours per day, R2 alone can complete the same work in 4 days. Working 3 hours per day, in how many days both R1 and R2 together can complete the same work? | |
| Ans | 1. 3.5 days | |
| 2. 5 days | ||
| 3. 7 days | ||
| 4. 2.5 days |
Correct Ans: 4
