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1 hour = 60 minutes
Therefore,
2 hours 50 minutes = 120 + 50
= 170 minutes
Percent means per 100, that is, divided by 100.
Therefore,
40% of 170 minutes
= 40/100 x 170
= 68 minutes
As 1 hour = 60 minutes,
68 minutes = 1 hour 8 minutes
40% of 2 hours 50 minutes is 1 hour 8 minutes.
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