Question

Select the correct answerA car moves with an average speed of 45 miles/hour. How long does the car take to travel 90 miles?O A2 minutesВ.2 hoursOC.45 minutesΟ Ο ΟD45 hoursE90 minutesResetNext

Answer 1

Given data:

The average speed of the car is

`S=45\text{ miles/hour}`

The distance traveled by the car is

`D=90\text{ miles}`

The average speed can be expressed as,

`\begin{gathered} S=(D)/(T) \\ T=(D)/(S) \end{gathered}`

Here, T is the time taken by the car.

Substituting the values in the above equation, we get:

`\begin{gathered} T=\frac{90\text{ miles}}{45\text{ miles/hour}} \\ =2\text{ hours} \end{gathered}`

Thus, the time taken by the car is 2 hours, and option (B) is correct.