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| Q.18 | A can complete a certain work in 30 days. B is 25% less efficient than A, and C is 60% more efficient than B. All the three started to work together. A and B left the work 9 days and 7 days, respectively, before the completion of the work, but C continued to work till it was completed. In how many days was the whole work completed? | |
| Ans | 1. 15 | |
| 2. 20 | ||
| 3. 12 | ||
| 4. 18 |
Correct Ans Provided: 1
