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Choose the correct option.
A watch gains 5 min. every hour. If it has set right at 12 noon. what is the true time when the watch is showing 5 pm,on the same day?
A4:480/13
B3:480/13
C0.569444444
DNone of these
Answer: Option (Login/Signup)
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Asked In ::
STEP-BY-STEP
- Let the actual time be x hours.
Then the time in the watch is x*(1+5/60) hours.
Hours passed since 12 noon = 5
∴ x*(1+5/60) = 5
or, x*(60+5) = 5 * 60
or, x = 300/65 = 60/13
Actual time = 60/13 hrs
= 4 8/13 hrs
=4 hrs (8*60)/13 min
= 4:480/13
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