- Understanding the relationship between efficiency and time taken for work. - Setting up equations based on given conditions about time difference. - Calculating combined work rate by adding individual work rates ($\frac{1}{T_{together}} = \frac{1}{T_1} + \frac{1}{T_2} + ...$).
Rajender engages Sunil and Vijay to do some construction work in his office. Sunil is highly skilled and is $3\frac{1}{2}$ times as good a workman as Vijay. Therefore, he is able to finish his work in 45 days less than Vijay. In how many days they both working together, can finish the work?
Asked in HAS Prelims 2023 · Topic: Mechanics (Newton's Laws of Motion and their applications)
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