SOLUTION: Marie started jogging at 08:30 at 9 km/h 15 minutes later, Heather starts jogging at 12 km/h how long did it take Heather to catch up with Marie?
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Question 417598: Marie started jogging at 08:30 at 9 km/h 15 minutes later, Heather starts jogging at 12 km/h how long did it take Heather to catch up with Marie?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
How far did Marie get in 1/4 hr?
km
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The equation for Heather is:
-------------
The equation for Marie is:
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Note that is the distance Heather has to go
to catch up with Marie
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By substitution:
Note that is the time from 8:30 + 15 min to the time they meet
hr
Heather catches Marie 1 hr after 8:30, or 9:30
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