SOLUTION: A bus traveling on a level road for 3 hrs at an average speed 20 mph faster than it traveled on a winding road. The time spent on the winding road was 4 hrs. Find the average speed

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: A bus traveling on a level road for 3 hrs at an average speed 20 mph faster than it traveled on a winding road. The time spent on the winding road was 4 hrs. Find the average speed      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1022553: A bus traveling on a level road for 3 hrs at an average speed 20 mph faster than it traveled on a winding road. The time spent on the winding road was 4 hrs. Find the average speed on the level road if the entire trip was 305 miles.
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Travel rates rule is RT=D relating rate, time, distance.

Variable assignments are implied in this table. 
              rate         time         distance
Level          r+20         3
Winding        r            4
TOTAL                                     305


Fill what distance information is missing and then form the necessary equation to solve.




---
r=35