At what time between 4 and 5 o'clock will the hands of a watch point in opposite directions?
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The answer is precisely 54
6/11th
minute past 4.
The numerical calculation is as follows:-
The numerical calculation is as follows:-
The hands of the watch are 20 min. spaces apart at 4 O'clock.
So, to be in opposite directions, they must be 30 min. spaces apart.
This means minute hand will have to gain 50 min. spaces.
As 55 min. spaces are gained in 60 min. ,
=>50 min. spaces are gained in
60/55
x 50
min. or 54
6/11
min.
Hence, required time = 54
6/11
min. past 4.
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