Question

A children's roller coaster ride travels along 3,300 feet of track at an average rate of 15

miles per hour. How many seconds does the ride take to travel this length of track?

Answer 1

150 seconds

Explanation:

Remember that

`1\ mile=5,280\ feet`

To convert miles to feet multiply by 5,280

`1\ hour=3,600\ seconds`

To convert hours to seconds, multiply by 3,600

step 1

Convert the average rate of miles per hour to feet per second

`15(mi)/(h)=15((5,280)/(3,600))=22(ft)/(sec)`

step 2

Find out how many seconds does the ride take to travel this length of track

we know that

The length of the track is 3,300 ft

so

Divide the total length of the track by the speed

`(3,300)/(22)= 150\ sec`