Question

A truck driver who covers the interstate in 4 1/2hours traveling at the posted speed of 55 mph. If the speed limit is raised to 65 mph, how much time will the same trip require

Answer 1

Answer: The same trip will require 3.8 hours.

Step-by-step explanation:

Since we have given that

Time = $4\dfrac{1}{2}=\dfrac{9}{2}$

Speed = 55 mph

So, distance would be

$Speed\times time=55\times 4.5=247.5\ miles$

If the speed limit = 65 mph

So, time will be

$\dfrac{247.5}{65}=3.8\ hours$

Hence, the same trip will require 3.8 hours.