There are 40 minutes to solve a test of 60 questions. 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:

There are 40 minutes to solve a test of 60 questions. A student comple

1.	There are 40 minutes to solve a test of 60 questions. 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:
A.	20
B.	30
C.	40
D.	45
Answer» C. 40

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There are 40 minutes to solve a test of 60 questions. 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:

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