There are 20 guest at a paris. the host has 8 gallons of punch. he estimates at each guest will drink 2 cups of punch. if his estimate is correct, how much punch will be left over at the end of the party?

First, change the 45 miles per hour to x miles per minute, since the problem is asking for the answer in minutes.

45 miles per hour
= 45 miles per 60 minutes
= 3/4 mile per minute

Now, use a ratio to solve.
30 miles : x minutes = 3/4 mile : 1 minute
30=3/4x
x=40

Nick will take 40 minutes to get to the town.

Hope this helps!