Question

Derrick lives 3 miles from the park.He rode his bicycle to the park at an average speed of 9 miles per hour.how many minutes did it take Derrick to ride his bicycle to the park?

Answer 1

20 minutes.

Explanation:

First of all we will find how much time it will take Derrick to travel one mile by dividing total time taken (1 hour=60 minutes) by total distance (9 miles).

`\text{Time taken to ride bicycle for one mile}=\frac{60\text{ minutes}}{9\text{ miles}}`

`\text{Time taken to ride bicycle for one mile}=6.6666666666666667\approx 6.67\frac{\text{ minutes}}{\text{ miles}}`

We can see that Derrick takes 6.67 minutes to travel one mile.

Now let us multiply time taken by Derrick to travel 1 mile by 3 to find the time taken by derrick to travel 3 miles.

`\text{Time taken by Derrick to ride his bicycle for 3 miles}=6.67*3`

`\text{Time taken by Derrick to ride his bicycle for 3 miles}=20.01\approx 20`

Therefore, Derrick will take 20 minutes to ride his bicycle to the park.