Question

A cyclist travels 3 miles in 15 minutes and then a further 7 miles in 25 minutes without stopping.

Answer 1

Answer:

v = 15 mph

Step-by-step explanation:

Given that,

A cyclist travels 3 miles in 15 minutes and then a further 7 miles in 25 minutes without stopping.

Total distance, d = 3 + 7 = 10 miles

Total time, t = 15 + 25 = 40 minutes = 0.6667 hours

Average speed,

$v=\dfrac{d}{t}$

Put all the value,

$v=\dfrac{10}{0.6667}\\\\= 14.99\ mph$

or

v = 15 mph

So, the required average speed is equal to 15 mph.