How Fast Can Sarah Bike?

What is Sarah's average speed per minute?

Sarah bikes 15 miles in 70 minutes. Which is her average speed per minute?

Answer:

Sarah's average speed per minute is 0.21 miles.

To calculate Sarah's average speed per minute, you need to divide the total distance she biked by the total time she took. In this case, Sarah biked 15 miles in 70 minutes. By dividing 15 miles by 70 minutes, you get 0.21 miles per minute. This means Sarah is biking at a speed of 0.21 miles per minute.

Another way to look at it is that Sarah is able to cover one mile in about 5 minutes. So, Sarah is shifting gears and biking faster than the average speed of 0.21 miles per minute, indicating she is faster than the person asking the question.