2 Answers

Ioums · Answer 1 · 2019-12-10T22:16:42+0000

Answer: Fourth option is correct.

Explanation:

Since we have given that

Distance traveled by Brian =
$4(1)/(4)\ miles=(17)/(4)\ miles$

Time taken by him =
(3)/(4) of an hour

So, Speed at which Brian is running fast is given by

$Speed=(Distance)/(Time)\\\\\\Speed=((17)/(4))/((3)/(4))\\\\\\Speed=(17)/(3)\\\\\\Speed=5(2)/(3)\ mph$

Hence, Brian was running fast at
$5(2)/(3)\ mph$

Therefore, Fourth option is correct.

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