SOLUTION: If the car covers 390 miles in 6 hours, how long does it take to cover 520 miles?

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: If the car covers 390 miles in 6 hours, how long does it take to cover 520 miles?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 314348: If the car covers 390 miles in 6 hours, how long does it take to cover 520 miles?
Found 3 solutions by rfer, rapaljer, Jstrasner:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
390/6=65
520/65=8 hrs
------------
390/6=520/x
390x=3120
x=8 hrs

Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
%28390mi%29%2F%286hrs%29+=+%28520mi%29%2F%28xhr%29
+390x=6%2A520
x=3120%2F390
x=8 hours

Dr. Robert J. Rapalje, Retired

Answer by Jstrasner(112) About Me  (Show Source):
You can put this solution on YOUR website!
This one won't be too difficult.
So first you want to find out the mileage per hour.
Therefore you divide 390 by 60:
390/60=65(miles/hour)
so, now you divide 520 MILES 65 MILES/HOUR:
520 miles/(hour/65miles)=8 hours