SOLUTION: A car averages 6 miles per hour faster than a trolley. If the car travels 155 miles in the same time it takes the trolley to travel 124 miles what is the speed of each?

Let V be the speed of the car, in miles per hour.

Then the speed of the trolley is (V-6) mph.


The condition says 

 = .


Both sides are the travel times.
Indeed, the Left side is the travel time for the car, while the right side is the travel time for the trolley.

From the equation,

155*(V-6) = 124*V.


At this point I leave you to solve the equation and to complete the assignment on your own.