SOLUTION: Wilma drove at an average speed of 35 mi/h from her home in City A to visit her sister in City B. She stayed in City B 20 hours, and on the trip back averaged 45 mi/h. She returned
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: Wilma drove at an average speed of 35 mi/h from her home in City A to visit her sister in City B. She stayed in City B 20 hours, and on the trip back averaged 45 mi/h. She returned
Log On
Question 862759: Wilma drove at an average speed of 35 mi/h from her home in City A to visit her sister in City B. She stayed in City B 20 hours, and on the trip back averaged 45 mi/h. She returned home 42 hours after leaving. How many miles is City A from City B
You can put this solution on YOUR website! Wilma drove at an average speed of 35 mi/h from her home in City A to visit her sister in City B. She stayed in City B 20 hours, and on the trip back averaged 45 mi/h. She returned home 42 hours after leaving. How many miles is City A from City B .
***
Total driving time=42-20=22 hrs
let x=travel time Wilma drove from home to city
22-x=travel time Wilma drove from city to home
distance=speed*travel time (equal in both directions)
..
35x=45(22-x)
35x=990-45x
80x=990
x≈12.38
35x≈433
How many miles is City A from City B ? 433
(