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"