Question

Kirby ran three-fourths of a half mile and dropped out of the 800 meter race. Her

pace was 12 miles an hour until the point she dropped out of the race. About how
many minutes did she run approximately?

Answer 1

1.88 minutes

Explanation:

This question can be solved using speed, distance and time concept along-with use of computing fractions.

Given

Distance ran by Kirby = 3/4 of half mile

= 3/4 of 1/2 mile = 3/4 * 1/2 mile = 3/8 mile.

Speed of Kirby until she dropped out of race = 12 miles/hour

Formula to calculate time = Distance/Time

substituting value of speed of Kirby and distance covered by Kirby

Time =
`(3/8) / 12 = 3/(8*12) = 1/32 \ hour`

Since one hour has 60 minutes 1/32 hour = (1/32) * 60 minutes = 1.88 minutes