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| Q.25 | A can do a certain work in 18 days. B is 25% less efficient than A. A alone worked for a few days and then, B joined him. Both worked together till the completion of the work. The entire work got completed in 12 days. For how many days did A and B work together? | |
| Ans | 1. 6 | |
| 2. 8 | ||
| 3. 9 | ||
| 4. 4 |
Correct Ans: 2
