Answer: \(\text{Average speed}=49\dfrac{1}{2}\) miles per hour
Step-by-step explanation:
Formula to find the average speed is given by :-
\(\text{Average speed}=\dfrac{\text{Distance}}{\text{Time}}\)
Given : Distance = \(24\dfrac{3}{4}\) miles=\(\dfrac{24\times4+3}{4}\) miles
\(=\dfrac{99}{4}\) miles
Time =\(\dfrac{1}{2}\) hour
Then, \(\text{Average speed}=\dfrac{\dfrac{99}{4}}{\dfrac{1}{2}}\)
i.e. \(\text{Average speed}=\dfrac{99\times2}{4}=\dfrac{99}{2}\)
i.e. \(\text{Average speed}=49\dfrac{1}{2}\) miles per hour
