Having trouble with this word problem;
mary and janet are running a race.
mary runs at 5mph, janet at 7 mph.
if they start at the same time, how long before they are 1.5 miles apart?

8mph

Step-by-step explanation:

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If Mary runs at 5mhp and Janet runs at 7mph, it will take them 45 minutes to reach a point where there is 1.5 miles between them.

Or, if you'd like a shorter

45 minutes.

Step-by-step explanation:

It will take both of them 1 hour to reach 2 miles between them. We are looking for 1.5 miles between them. So, split 1 hour into 4 equal parts.

1hr = 60 min.

4 x 15 = 60

Next, Add 3 of those 4 parts together or multiply one part by 3.

15 x 3 = 45

There's the answer.

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