Arun earns rs.90 in 7 hours and varun rs.120 in 11 hours.The ratio of the earnings is
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Earnings of Arun = Rs 90 for 7 hrs
Earnings of Arun in 1 hr = 90/7
Earnings of Varun = Rs 120 for 11 hrs
Earnings of Varun in 1 hr = 120/11
Ratio of earnings = Earning of Arun in 1 hr : Earning of Varun in 1 hr
Ratio = 90/7 : 120/11
Ratio = 3/7 : 4/11
Ratio = 33 : 28
Therefore, the ratio of their earnings is 33:28
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