Solve this Time and Work question: Yash starts a task alone and works for 8 days. Dev then joins, and the task is completed in 16 days from the start. If Yash alone takes 24 days, how many days would Dev alone take?

The verified answer to “Solve this Time and Work question: Yash starts a task alone and works for 8 days. Dev then joins, and the task is completed in 16 days from the start. The question-specific working supplied with the item states: ash works throughout all 16 days and completes 16/24. Dev works for 8 days and completes the remaining 0.33. Therefore Dev's time = (8)/(0.33) = 24 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 24 days. The alternatives 26 days, 22 days and 23 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 24 days, so option A is uniquely correct. The method is transparent, question-specific and suitable for SSC, Railway, Banking, Defence, State and other competitive examinations.