Concept explainers
For Exercises
A kayaker paddles upstream for 1.5 hours, then turns his kayak around and returns to his tent in 1 hour. He travels 3 miles each way. What is the rate of the river’s current?
A.
B. 2
C.
D.
To identify correct answer:The rate of river current.
Answer to Problem 5STP
Option (A.) 0.5mi/h is the rate of the river current.
Explanation of Solution
Given information:
Time taken by kayaker when paddles upstream=1.5 hours
Time taken kayaker when returning to tent=1 hour
Distance of the river= 3miles
Formula used:
Let us consider,
Average speed = r
Rate of river current= c
Now, speed of kayaker when paddles upstream
Speed of kayaker when returning to tent
We know that,
Now putting the value of above equation, we get-
So, Option (A.) 0.5mi/h is the rate of the river current.
Chapter 6 Solutions
High School Math 2012 Common-core Algebra 1 Practice And Problem Solvingworkbook Grade 8/9
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