Question

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

Answer 1

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"