Question

A murder suspect was found 200 miles from the crime scene 150 minutes after the time of death. Assuming he actually committed the murder, how fast (in miles per hour) would he have had to drive in his getaway car? Given this information, is he a realistic suspect?

Answer 1

The suspect's speed was `"80 mi/h"`.

Yes, he is a realistic suspect.

Explanation:

First convert `150` minutes to hours.

`150color(red)cancel(color(black)("min"))xx("1 h")/(60color(red)cancel(color(black)("min")))="2.5 h"`

To determine his speed, divide miles by hours.

`r=("200 mi")/("2.5 h")="80 mi/h"`

Yes, he is a realistic suspect.