SOLUTION: joe jogs 2.5 slower than kelly jogs. in the time that it takes joe to jog 30 miles, kathy can jog 40 miles. find the jogging speed of each person.

Question 679700: joe jogs 2.5 slower than kelly jogs. in the time that it takes joe to jog 30 miles, kathy can jog 40 miles. find the jogging speed of each person.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
joe jogs 2.5 slower than kelly jogs. in the time that it takes joe to jog 30 miles, kathy can jog 40 miles. find the jogging speed of each person.
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2.5 what?
If it's 2.5 mi/hr,
r = Joe's rate
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30/r = 40/(r+2.5)
30r + 75 = 40r
r = 7.5 mi/hr
Kelly's rate = 10 mi/hr

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