SOLUTION: A bus took a 330 mile trip in 7 hours. The speed was 54 mph for the first part of the trip, and 30 mph for the return trip. How many hours were traveled at each speed?

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: A bus took a 330 mile trip in 7 hours. The speed was 54 mph for the first part of the trip, and 30 mph for the return trip. How many hours were traveled at each speed?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 675517: A bus took a 330 mile trip in 7 hours. The speed was 54 mph for the first part of the trip, and 30 mph for the return trip. How many hours were traveled at each speed?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A bus took a 330 mile trip in 7 hours. The speed was 54 mph for the first part of the trip, and 30 mph for the return trip. How many hours were traveled at each speed?
-----------
1st Part DATA:
rate = 54 mph ; time = x hrs ; distance = 54x miles
-------
2nd Part DATA:
rate = 30 mph ; time = 7-x hrs ; distance = 30(7-x) miles
---------
Equation:
distance + distance = 330 miles
54x + 210 - 30x = 330
24x = 120
x = 5 hrs (time for 1st part)
7-x = 2 hrs (time for 2nd part)
=================================
Cheers,
Stan H.
===================