16.
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At what time between 5.30 and 6 will the hands of a clock be at right angles?
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A.
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B.
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C.
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40 min. past 5
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D.
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45 min. past 5
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Answer: Option B
Explanation:
At 5 o'clock, the hands are 25 min. spaces apart.
To be at right angles and that too between 5.30 and 6, the minute hand has to gain (25 + 15) = 40 min. spaces.
55 min. spaces are gained in 60 min.
40 min. spaces are gained in
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60
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x 40
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min
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=
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43
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7
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min.
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55
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11
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Required time = 43
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7
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min. past 5.
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11
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