SOLUTION: A cyclist traveled at a rate of 24 mph to visit a nearby town. The cyclist averaged 18 mph on the return trip. If the round trip took 4.9 hours, find the distance to the nearby to

Algebra ->  Human-and-algebraic-language -> SOLUTION: A cyclist traveled at a rate of 24 mph to visit a nearby town. The cyclist averaged 18 mph on the return trip. If the round trip took 4.9 hours, find the distance to the nearby to      Log On


   



Question 97895: A cyclist traveled at a rate of 24 mph to visit a nearby town. The cyclist averaged 18 mph on the return trip. If the round trip took 4.9 hours, find the distance to the nearby town.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
: A cyclist traveled at a rate of 24 mph to visit a nearby town. The cyclist averaged 18 mph on the return trip. If the round trip took 4.9 hours, find the distance to the nearby town.
:
Let d = one-way distance to the town
:
Write a time equation, Time = dist/speed
:
d%2F24 + d%2F18 = 4.9
:
Multiply the equation by the least common multiple, 72:
72d%2F24 + 72d%2F18 = 72(4.9)
:
Cancel out the denominators:
3d + 4d = 352.8
:
7d = 352.8
:
d = 352.8/7
:
d = 50.4 miles
:
:
Check solution:
50.8%2F24 + 50.8%2F18 = 4.9
:
2.1 + 2.8 = 4.9