Clocks and Calendars Practice Test 1 with solutions

Question : 17 of 40

Marks: +1, -0

The angle between 4 and 5 o'clock will the hands of a clock coincide?

21 min. past 4
$21 9/{11}$ min. past 4
30 min. past 4
None of these

Solution:

A 4 o'clock the hour hand at 4 hand minute hand at 12, hence both the hands are 20 minute spaced apart. For the coinciding position the minute hand will have to move through 20 minute spaces, then Time taken =

{60}/{55} × 20

21 9/{11}

minutes
Hence, required time = 21

9/{11}

minute past 4.

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