Time Measurement of sum 3 hours 10 minutes - 2 hours 40 minutes
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Solution - 1 hour= 60 minutes
3hours 10mins = 190 mins
2hours 40 mins = 160 mins
190 mins- 160 mins= 30 mins that is half an hour
Ans - 3 hours 10 minutes - 2 hours 40 minutes= 30 minutes
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