Concept explainers
How long will the return trip take at 40mi/h?
Answer to Problem 15PPE
Explanation of Solution
Given information:
A family takes
The travel time varies inversely with the speed of the car.
Concept Used:
- Speed, distance and time concept is used.
Calculation:
Speed of car when goes from house to lake = 48mi/h.
Time taken =
As
Distance from house to lake =
Speed of car when goes from lake to house = 40mi/h
As travel time varies inversely with the speed of the car.
Return trip takes
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