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25 September, 12:18

15. The distance a car travels can be found using the formula d = r. t, where d is distance, r is the rate of speed, and t is time. If the car has traveled 120 miles in 3 hours, what is the average rate of speed?

A. 30 miles per hour

B. 40 miles per hour

C. 60 miles per hour

D. 360 miles per hour

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Answers (2)
  1. 25 September, 13:00
    0
    40 miles per hour

    Step-by-step explanation:

    Speed = Distance / Time Speed = 120 / 3 Speed = 40 miles per hour
  2. 25 September, 14:13
    0
    Option B. 40 miles per hour

    Step-by-step explanation:

    Distance = rate of speed * time

    If Distance = 120 miles and time = 3 hours

    we will have

    120 = r * 3

    120 = 3r

    Divide both sides by 3 and we will have

    3r/3 = 120/3

    r = 40
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