Concept explainers
To find the speed of current
Answer to Problem 34E
Speed of current is
Explanation of Solution
Given information:
Time taken to travel downstream= 40 minutes
Time taken to travel upstream= 20 minutes
Distance= 20 miles
Calculation:
Let the speed of boat be x and speed of current be y .
Also,
Where
According to question,
On going downstream, the speed of current add, resulting into less time taken. So,
On going upstream, the speed of current subtracts, resulting into more time taken. So,
As the coefficients of y In (1) and (2) are same, add,
Solving,
Hence,
Put in (1),
Solving,
And
Hence, speed of current is
Chapter 5 Solutions
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