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Question : Working 12 hours per day, Raj can complete a work in 12 days. How many hours per day he should work to finish the same work in 9 days?

Option 1: 20 hours

Option 2: 24 hours

Option 3: 12 hours

Option 4: 16 hours


Team Careers360 13th Jan, 2024
Answer (1)
Team Careers360 23rd Jan, 2024

Correct Answer: 16 hours


Solution : We know, H 1 × D 1 = H 2 × D 2 , Where H 1 , H 2 are hours per day and D 1 , D 2 are number of days.
Let the required hours be $x$.
So, 12 × 12 = $x$ × 9
⇒ $x$ = 16
Hence, the correct answer is 16 hours.

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