BrainlyStudent094 BrainlyStudent094

13-06-2021
Mathematics

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A man travelled a distance of 61 miles in 7 hours. He covered a part of the distance at a speed of 8 miles/ hr and the remaining at a speed of 10 miles/ hr. How long did he travel at 8 miles/ hr?

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14-06-2021

Answer:

4.5 hours

Step-by-step explanation:

8t + 10(7-t) = 61

8t +70-10t=61

-2t = 61-70

-2t= -9

t = -9/-2

t = 4.5

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