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1 September, 04:47

Kevin can run a mile in 7 mins. which is the most reasonable time for him to run a 10-km race?

a. 20 mins

b. 43 mins

c. 52 mins

d. 61 mins

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Answers (1)
  1. 1 September, 08:17
    0
    we first convert miles to kilometers.

    1 Mile = 1.609 km

    He takes 7 minutes to run 1.609 km

    What distance does he run in 1 min?

    7 = 1.609

    1 = x

    Where x is the km covered in 1 minute.

    we cross multiply the equation

    7x = 1.609

    x = 1.609/7

    x = 0.229 km

    If he runs 0.229 km in 1 minute how about 10 km?

    0.229 = 1

    10 = x

    cross multiply the equation:

    .229x = 10

    x = 10/.229

    x = 43.6 minutes

    The answer is "B"
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