SOLUTION: Arnold sets out for a hike. After walking for some time, he discovers that he left his lunch. A passing passenger bus takes him back home at 40kph. When he gets home he finds ou

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Question 1144894: Arnold sets out for a hike. After walking for some time, he discovers that he left his lunch. A passing passenger bus takes him back home at 40kph. When he gets home he finds out that he was gone for 1 hour. How far did he walk if his rate was 5 kph?
Answer by ikleyn(52775) About Me  (Show Source):
You can put this solution on YOUR website!
.

Let "d" be the unknown distance.


Then you have this "time" equation


    d%2F5 + d%2F40 = 1 hour.


To solve it, multiply both sides by 40. You will get


    8d + d = 40,

    9d = 40

     d = 40%2F9 kilometers.    ANSWER


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