Question

If it took Carlos an hour to cycle from his house to the library yesterday, was the distance that he cycled greater than 6 miles? (Note: 1 mile = 5,280 feet)

(1) The average speed at which Carlos cycled from his house to the library yesterday was greater than 16 feet per second.
(2) The average speed at which Carlos cycled from his house to the library yesterday was less than 18 feet per second.

Answer 1

Option 2 is the correct answer.

Explanation:

We know that

`Speed=(Distance)/(time)`

We have 1 mile = 5280 feet thus 6 miles = 31680 feet

Similarly 1 hour = 3600 seconds

Applying values in the equation above we get

`Speed=(31680feet)/(3600sec)\\\\Speed=8.8feet/sec`

Thus his average speed is less than 18feet/sec