SOLUTION: Can't get equasion, but really need it. Problem is:
the Petersons drove to a friends house at 80 km/h. On the return trip, rain reduced their speed 10 km/h. If their total drivi
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: Can't get equasion, but really need it. Problem is:
the Petersons drove to a friends house at 80 km/h. On the return trip, rain reduced their speed 10 km/h. If their total drivi
Log On
Question 101785This question is from textbook
: Can't get equasion, but really need it. Problem is:
the Petersons drove to a friends house at 80 km/h. On the return trip, rain reduced their speed 10 km/h. If their total driving time was three hours, find the total distance driven.
thankx. This question is from textbook
You can put this solution on YOUR website! the Petersons drove to a friends house at 80 km/h. On the return trip, rain reduced their speed 10 km/h. If their total driving time was three hours, find the total distance driven.
--------------------
To the house DATA:
Rate = 80 kph ; distance = x km ; time = d/r = x/80 hrs.
-----------------
From the house DATA:
Rate = 70 kph ; distance = x km ; time = d/r = x/70 hrs.
-----------------
EQUATION:
time to + time from = 3 hrs
x/80 + x/70 = 3
70x + 80x = 3*70*80
150x = 16800
x = 112 km
Total distance driven = 2x = 224 km
==================
Cheers,
Stan H.
(