# math

How long does it take to travel 84.2km
at 80 kph

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1. recall that speed is distance travelled per unit of time, or
v = d/t
substituting,
80 = 84.2 / t
80t = 84.2
t = 84.2/80
t = 1.0525 h

hope this helps~ :)

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2. Time = Distance/Speed
= 84.2 km/(80 km/h) = 1.0525 hours
= 63.15 minutes
= 63 minutes and 9 seconds

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