Math, asked by Sudhanshu001, 1 year ago

a theif ran away from the police station with uniform speed 100 metre per minutes after 1 minute a policeman runs behind the thief to catch him he was at a speed of 100 metre per minute in first minute and increases the speed 10 metre per minute on its succeeding minute after how many minutes the police man catches the thief

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Answered by s1983

2

answer is 21
please see the pic

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