SOLUTION: A horse can travel at the rate of 5miles per hour for the first two hours of the trip. After the first two hours the horse's speed drops to 3 miles per hour. How many hours will it
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-> SOLUTION: A horse can travel at the rate of 5miles per hour for the first two hours of the trip. After the first two hours the horse's speed drops to 3 miles per hour. How many hours will it
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Question 627513: A horse can travel at the rate of 5miles per hour for the first two hours of the trip. After the first two hours the horse's speed drops to 3 miles per hour. How many hours will it take the horse to travel 20 miles? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! A horse can travel at the rate of 5miles per hour for the first two hours of the trip.
After the first two hours the horse's speed drops to 3 miles per hour.
How many hours will it take the horse to travel 20 miles?
:
let t = total time for the trip
then
(t-2) = time at 3 mph (1st two hrs were at 5 mph)
:
Write a distance equation: dist = speed * time
:
Dist at 5 mph + Dist at 3 mph = 20 miles
5(2) + 3(t-2) = 20
10 + 3t - 6 = 20
3t + 4 = 20
3t = 20-4
3t = 16
t = 16/3
t = 5 hrs for the trip
:
:
Check this
5(2) + 3(3.333) = 20 mi
