SOLUTION: Jenny runs 4 miles in 30 minutes. At the same rate, how many miles would she run in 18 minutes?

Question 221219: Jenny runs 4 miles in 30 minutes. At the same rate, how many miles would she run in 18 minutes?
Found 2 solutions by rapaljer, RAY100:
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Set up the proportion (or ratio!)

Since means ,

means that

mi.

R^2

Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
Remember velocity = Distance / Time,,,or v=d/t,,,or t= d/v,,,or d=v*t
.
v= 4 miles / (30 min * 1hr / 60 min )= 8 mph
.
d= (18 min * 1 hr/60min) * 8 mph = 2.4 miles
.
check,,,,,4mi/ x = 30 min/ 18,,,,4*18/30 = 2.4,,,,ok
.

RELATED QUESTIONS
Martina runs 4 miles in 30 minutes. At the same rate, how many miles would she run in 18... (answered by Fombitz)
Lucy runs 4 miles in 30 minutes. At the same rate, how many miles would she run in 18... (answered by rfer)
Amy runs 4 miles in 30 minutes. At the same rate, how many miles would she run in 18... (answered by ankor@dixie-net.com)
Jenny runs 3 miles in 25 minutes. At the same rate, how many miles would she run in 20... (answered by ewatrrr)
Kareem runs 4 miles in 30 minutes. At the same rate, how many miles would he run in 18... (answered by stanbon)
yolanda runs 4 miles in 30 minutes, at the same rate how many miles would she run in 72... (answered by jim_thompson5910)
Kala runs 4 miles in 30 minutes. At the same rate, how many miles would she run in 48... (answered by Alan3354)
Tammy runs 4 miles in 30 minutes. At the same rate, how many miles would she run in 48... (answered by macston)
Sara runs 4 miles in 30 minutes. At the same rate, how many miles would she run in 48... (answered by ikleyn)