SOLUTION: A bus travels 10 kilometer per hour faster than a car which had gone an hour ahead. Find the rate of each vehicle. How far had the car traveled when it was overtaken by the bus?
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Question 747066: A bus travels 10 kilometer per hour faster than a car which had gone an hour ahead. Find the rate of each vehicle. How far had the car traveled when it was overtaken by the bus? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! A bus travels 10 kilometer per hour faster than a car which had gone an hour ahead.
Find the rate of each vehicle.
How far had the car traveled when it was overtaken by the bus?
:
Let s = speed of the car
then
(s+10) = speed of the bus
:
When the bus overtakes the car, they will have traveled the same distance
let that distance = d
:
Write a time equation; time = dist/speed
:
Car travel time - bus travel time = 1 hr - = 1
multiply by s(s+10), results:
d(s+10) - ds = s(s+10)
ds + 10d - ds = s^2 + 10s
10d = s^2 + 10s
A quadratic equation
s^2 + 10s - 10d = 0
obviously we need a little more information to solve this
