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pedagogue

12th February 2019, 18:38
An easier calculation
440 yards is 1/4 of a mile, so the train takes (0.25 ÷ 40) x 60 minutes to travel 1/4 of a mile.
The train travels 5.25 miles, so the result is (0.25 ÷ 40) x 60x 5.25 minutes.
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