Question

A truck covers a particular distance in 3 hours with the speed of 60 miles per hour. If the speed is increased by 30 miles per hour, find the time taken by the truck to cover the same distance.

using y=kx​

Answer 1

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Answer:

2 hours

Explanation:

Time, speed, and distance are related by ...

d = st

The distance covered is ...

d = (60 mi/h)(3 h) = 180 mi

Then the time taken at the higher speed is ...

180 mi = (60 mi/h +30 mi/h)(t)

t = (180 mi)/(90 mi/h) = 2 h

The time taken at the higher speed is 2 hours.