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balandron [24]
3 years ago
12

A fisherman can row upstream at 5mph and downstream at 10mph he started rowing upstream until he got tired and then rowed downst

ream to his starting point how far did the fisherman rown if the trip took 6 hrs
Mathematics
1 answer:
AlekseyPX3 years ago
8 0

We have been given that the upstream speed is 5 mph and the down stream speed is 10mph.

Let the fisherman traveled a distance of x miles.

The total time of the trip is 6 hours.

Relations between speed (s), time (t) and distance (d) is s = \frac{d}{t}

Hence, t= \frac{d}{s}

Time upstream +  time downstream = 6

\frac{x}{5} +\frac{x}{10} =6

lcm = 10

\frac{2x+x}{10} =6

=> \frac{3x}{10} =6

Cross multiplying, 3x= 60

x = 20 miles .. Answer.

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Step-by-step explanation:

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We should check that when x = 2m, the temperature must be 197°

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Now we want to find the time such the temperature is 172°F

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