A boy ran for 2 hours 13 minutes in a race but the announcer wrongly announce this as 2 hours 31 minutes. Find the percentage error.
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Answer:
If boy ran 2hr 13 mins. Then it's total time in hrs is 133/60 hr
Again,
He says 2hr31mins. Then it's total time in hrs is 151/60
Then, %=151/133×100
= 113.53% is answer.
Hope it will help you
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