Word Problems with One Unknown Practice Test

If it takes 9 hours for 4 people to build a shed, how many people are needed to build the same type of shed in one-third of the time?

It takes 45 minutes to drive to the nearest bowling alley taking city streets going 30 miles per hour (mph). How long will it take to get there using the freeway going 65mph if the distance is the same?

(Round to the nearest minute).