Question

Bradley went on a bike ride to the store 6 miles away. If it took Bradley 3/8 of an hour to get there and 1/4 of an hour to get back, what was his average rate of speed (miles per hour) for the entire trip?

Answer 1

Answer:

Bradely's average speed is 14.4 miles per hour.

Step-by-step explanation:

Average Speed tells the rate at which object is travelling his whole journey.

$Average\ Speed\=\ \frac{Total\ distance\ traveled}{Total\ time\ taken}$

∴ $Average\ Speed=\dfrac{6 + 6}{\frac{3}{8}+\frac{1}{4}}$

⇒ $Average\ Speed=\dfrac{12}{\frac{3+2}{8}}$

⇒ $Average\ Speed=\dfrac{12}{\frac{5}{8}}$

⇒ $Average\ Speed=\frac{12}{5}\times 8$

⇒ Average Speed = 14.4 miles per hour

Thus, Bradely's average speed for traveeling his whole journey is 14.4 miles per hour.