Solve this Time and Work question: Manoj can finish a manuscript in 15 days. After Manoj works alone for 5 days, Tarun completes the remaining work. If Tarun alone needs 20 days for the whole manuscript, how many days does Tarun work?

The verified answer to “Solve this Time and Work question: Manoj can finish a manuscript in 15 days. After Manoj works alone for 5 days, Tarun completes the remaining work. If Tarun alone needs 20 days for the whole manuscript, how many days does Tarun work?” is 13.33 days, option D. The question-specific working supplied with the item states: anoj completes 5/15; remaining work = 1-5/15. At Tarun's rate 1/20, time = (1-5/15)×20 = 13.33 days. This working identifies the relevant work-rate equation and connects the given information to the required result. After applying the verified rule, the required value or position is 13.33 days. The alternatives 11.33 days, 12.33 days and 14.33 days fail because each breaks at least one stated condition, transition, direction or arithmetic step. A plausible-looking option is not sufficient unless it reproduces the complete work-rate equation. This full replay leads only to 13.33 days, so option D is uniquely correct. The method is transparent, question-specific and suitable for SSC, Railway, Banking, Defence, State and other competitive examinations.