SOLUTION: Henry can ride his horse at 4 miles per hour and get to the battlefield on time. If he stops for 1 hour to make a speech to his troups, he must ride 5 miles per hour for the whole

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Question 263413: Henry can ride his horse at 4 miles per hour and get to the battlefield on time. If he stops for 1 hour to make a speech to his troups, he must ride 5 miles per hour for the whole trip to get to the battlefield on time. How far is it to the battlefield?
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
This is an RTD problem. Here is a table based on the given information
travel . . . . . rate . . . . . .time . . . . . .distance
horse . . . . . . 4 . . . . . . . .t . . . . . . . . .4t
speech . . . . . 5 . . . . . . . t-1 . . . . . . . 5t - 5
set
4t+=+5t+-+5
subtract 5t to get
-t+=+-5
so
t = 5.
distance = 4t = 20 miles