Question

Mary and Janet are running in a race. Mary runs at 7 mph. Janet runs at 5mph. If they start at the same time, how long will it be before they're 1.5 miles apart?

Answer 1

7t+5t=1.5

Answer 2

The answer says 45 minutes. How do you get that from 7t+5t=1.5

Answer 3

What did you get when you solve that equation?

Answer 4

t=.125

Answer 5

OH is that hours?

Answer 6

yes

Answer 7

and you convert it into minutes?

Answer 8

duh! Thank you!!

Answer 9

Which is 7.5 minutes. Not 45

Answer 10

damn. yeah

Answer 11

maybe the answer is wrong let me recheck

Answer 12

it says 45 minutes in the book ugh whatever

Answer 13

Did you post the problem correctly? Maybe there is a typo.

Answer 14

If they are running in the same direction then we should write 7t-5t=1.5
2t=1.5
t=.75 hours = 45 min