Bob drove 120 miles on his vacation. He drove an average of 1.2 times faster on the second 60 miles of his trip than he did on the first 60 miles of his trip. Which expression represents the time he spent driving? Let x = his speed on the first half of the trip.

Question

Tess Kramer

Mathematics

7 February, 18:29

Bob drove 120 miles on his vacation. He drove an average of 1.2 times faster on the second 60 miles of his trip than he did on the first 60 miles of his trip. Which expression represents the time he spent driving? Let x = his speed on the first half of the trip.

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Answers (1)

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Phoenix Lara · Answer 1

V = x (his speed on the first half of the trip)

1.2 v = 1.2 x (his speed on the second half of the trip)

t = d / v

t = 60 / x + 60 / 1.2 x = 60 / x + 50 / x = 110 / x

Answer: A) 110 / x