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14 September, 22:23

1. Evan drove 308 km in the same time that Meghan drove 329 km. If Meghan drove

on average 6 km/h faster than Evan, calculate her average speed and the time taken

for the journey.

+1
Answers (1)
  1. 15 September, 01:40
    0
    Her average speed is 94 km/h

    Time taken is 3.5 hours

    Step-by-step explanation:

    Let Evan's average speed be x km/h.

    now since Meghan drove faster, according to the question, we can say her average speed would be x + 6 km/h

    Mathematically, time = distance/speed

    so; since time is the same; we have

    308/x = 329 / (x + 6)

    cross multiply

    329 (x) = 308 (x + 6)

    329x = 308x + 1848

    329x-308x = 1848

    21x = 1848

    x = 1848/21

    x = 88 km/h

    Meghan average speed = x + 6 = 88 + 6 = 94 km/h

    Time taken would be 329/94 = 3.5 hours
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