Question
A worker noticed that the hour hand on the factory clock had moved by 225 degrees during her stay at the factory. For how long did she stay in the factory?
Options :
3.75 hours
4 hours and 15 mins
8.5 hours
7.5 hours
Answer :
7.5 hours
Solution :
We know that watch hour hand complete one rotation (360°) in 12 hours.
So, for 225°, corresponding time = (225/360) x 12 = 7.5 hours
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