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CDS Model Paper 3 Mathematics

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Question : 18

Total: 100

A boat, while going downstream in a river covered a distance of 50 mile at an average speed of 60 miles per hour. While returning, because of the water resistance, it took one hour fifteen minutes to cover the same distance. What was the average speed of the boat during the whole journey?

40‌mph
48‌mph
50‌mph
55‌mph

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