Question

The students of 4th grade are writing a test of 30 minutes duration. The test starts at 10:10. At what time the teacher collects the answer sheets?

• A. At 10:30
• B. At 10:40
• C. At 10:20
• D. At 10:50

Answer 1

The correct option is B At 10:40

If it is 10:10 on the clock then the minute hand will be pointing at 2.
[Since 2 x 5 = 10]
Since the test duration is 30 minutes, adding 30 minutes to 10 minutes, gives us 40 minutes.
10:10 + 00:30 = 10:40
$\therefore$ The teacher collects the answer sheet at 10:40.