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Q.
At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but,not together?
A.
(5 + 5/11 )min past 7
B.
(6 + 5/11) min past 7
C.
7
D.
8
View Answer
Correct choice: A
Explanation:
When the hands of the clock are in the same straight line but not together, they are 30 minute spaces apart. At 7 o'clock, they are 25 min. spaces apart. Minute hand will have to gain only 5 min. spaces. 55 min. spaces are gained in 60 min. 5 min spaces are gained in (60/55*5) min = 5x5/11min so, Required time = 5x5/11 min past 7
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