There are 40 minutes to solve a test of 60 minutes. A student completes 20 questions in 20 minutes. He continues with the same speed and leaves the hall 10 minutes earlier. The number of questions solved by him is?
- 20
- 30
- 40
- 45
Explanation
Student solved 20 questions in 20 minutes, so his speed is 1 question per minute.
He had 40 minutes to solve the test, but left 10 minutes early, so he worked for 40 - 10 = 30 minutes total.
Questions solved = 20 (in first 20 minutes) + 10 (in next 10 minutes) = 30 questions.
Last verified on 06-03-2026
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