SOLUTION: Michelle and Thea are running in the Fun Run. Michelle runs at 7 kph and Thea at 5 kph. If they start at the same time, how long will it be before Michelle is one-forth kilometer a

Question 1189809: Michelle and Thea are running in the Fun Run. Michelle runs at 7 kph and Thea at 5 kph. If they start at the same time, how long will it be before Michelle is one-forth kilometer ahead of Thea?

Found 2 solutions by Alan3354, ankor@dixie-net.com:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Michelle and Thea are running in the Fun Run. Michelle runs at 7 kph and Thea at 5 kph. If they start at the same time, how long will it be before Michelle is one-forth kilometer ahead of Thea?
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They separate at 2 km/hr.
(1/4)/2 = 1/8 of an hour
=========================
Hours are the units given.
It can be converted to minutes, nanoseconds, or fortnights.
Up to you.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Michelle and Thea are running in the Fun Run. Michelle runs at 7 kph and Thea at 5 kph.
If they start at the same time, how long will it be before Michelle is one-forth kilometer ahead of Thea?
:
let t = time (in hours) from start when M is 1/4 min ahead of T
:
Write a dist equation
7t - 5t = 1/4
2t = 1/4
divide both sides by 2
t = 1/8 hrs, change to minutes, 1/8 * 60 = 7.5 min
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