Question 26318
Since you know that the trip took 5 hours in total. You also know that the quanity of a speed and the its time will be lless that 5. so 5-x
Now lets say we want to evalutate the time for 65mph speed.
The quantity of 65mph and 5-x is proportional to 55 at x time, when they both equal the same distance 295 together.
EXPRESSION:
65(5-x)+55x=295
325-65x+55x=295
10x=30
x=3


Now you know that x = 3, and the 3 hours support 55mph.
To find the 65mph time; 5-3=2


Hence, for 65mph it took 2hours (time it takes to your grandpa's hourse) and for 55mph it took 3 hours (time is takes to reach the Ohio border.
Paul.