SOLUTION: Jose’s boat has a top speed of 20 miles per hour in still water.
While traveling on a river at top speed, he went 40 miles upstream in the same amount of time he went 60 miles
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-> SOLUTION: Jose’s boat has a top speed of 20 miles per hour in still water.
While traveling on a river at top speed, he went 40 miles upstream in the same amount of time he went 60 miles
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Question 905044: Jose’s boat has a top speed of 20 miles per hour in still water.
While traveling on a river at top speed, he went 40 miles upstream in the same amount of time he went 60 miles downstream. Find the rate of the river current. Answer by richwmiller(17219) (Show Source):
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r*t=d
(20+c)*t=60
(20-c)*t=40
20t+c*t=60
20t-c*t=40
add
40t=100
t=10/4
t=5/2=2.5 hours
(20+c)*t=60
(20+c)*2.5=60
20+c=24
c=4 mph
