Question
Initially, Rajat works at a speed
where he can complete a task in 24 hours, but he maintains this speed for only 16 hours. After that, he reduces his speed to a level where he could finish the entire task in 18 hours. If Rajat continues working without a break, how long will it take him to complete the task?Solution
ATQ,
Rajat's 16 hr work = 16/24 = 2/3. Remaining work = 1 – 2/3 = 1/3. Using work and time formula: This will be completed in {(1/3)×18} i.e. 6 hrs. So, total time taken to complete work = 16 + 6 = 22 hrs.
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