There are 40 papers of students of a class to be checked by two teachers. Mr. Ashok can check five papers in an hour and Mrs. Meena can check four papers in an hour. If Mr. Ashok spends three hours in checking the papers and Mrs. Meena works for two hours, what percentage of the papers will be checked in all?
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Answer: 57.5%
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Step-by-step explanation:
Total papers = 40
Speed of Mr. Ashok = 5 paper / hour
Speed of Mrs Meena = 4 paper / hour
After three hours,
paper checked by Ashok = 5*3 = 15
After 2 hours,
paper checked by Meena = 4*2 = 8
Total paper checked = 15+8 = 23
% of paper checked = 23 / 40 * 100 = 57.5 %
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