SOLUTION:
A fisherman can row upstream at 2
mph and downstream at 8
mph. He started rowing upstream until he got tired and then rowed downstream to his starting point. How far di
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Expressions-with-variables
-> SOLUTION:
A fisherman can row upstream at 2
mph and downstream at 8
mph. He started rowing upstream until he got tired and then rowed downstream to his starting point. How far di
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mph. He started rowing upstream until he got tired and then rowed downstream to his starting point. How far did the fisherman row if the entire trip took 7
You can put this solution on YOUR website! A fisherman can row upstream at 2 mph and downstream at 8 mph.
He started rowing upstream until he got tired and then rowed downstream to his starting point.
How far did the fisherman row if the entire trip took 7 hours?
:
let d = the distance to the turn around point
:
Write a time equation; time = dist/speed
up time + down time = 7 hrs + = 7
multiply by 8
8* + 8* = 8(7)
cancel the denominators
4d + d = 56
5d = 56
d = 11.2 mi to turn around,
He rowed a total of 22.4 mi
:
;
Check this solution, find the actual time each way
11.2/2 = 5.6 hrs
11.2/8 = 1.4 hrs
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tot time:7 hrs
