Question: I need help with this problem:
The biggest waterslide at Five Flags is 300 feet long, and people slide down at 60 feet/minute. The second biggest waterslide is 240 feet long, but steeper, so people slide down at 80 feet/minute. How much longer does it take to ride the biggest slide compared to the second biggest slide?
Answer: 
First find the ride length of the biggest slide: 300 feet / 60 feet/minute = 5 minutes
Then find the ride length of the second biggest slide: 240 feet / 80 feet/minute = 3 minutes
Then subtract the ride length of the second longest slide from the longest slide to find the difference: 5 minutes - 3 minutes = 2 minutes