Concept explainers
To calculate the speed of the boat that travel upstream and downstream
Answer to Problem 31STP
The speed of the boat is 12 mph. The correct answer is option A
Explanation of Solution
Given information:
The boat take 3 hours of time to travel 27 miles upstream and 2 hours of time to travel 30 miles downstream
The given options are,
A. 12 mph
B. 14 mph
C. 3 mph
D. 5 mph
Calculation:
In 3 hours boat travels = 27 miles upstream
So, in 1-hour boat will travel =
In 2 hours boat travels = 30 miles downstream
So, in 1-hour boat will travel =
Now, the speed of boat is 9 mph upstream and 15 mph downstream
The average speed of the boat is calculated as,
Therefore, the speed of the boat is 12 mph
Chapter 12 Solutions
Algebra 1
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