Class Math Problem - Going to the River Run Centre

Here is our class problem we worked on today. Practice this question :)



22 students and their teacher are going on a trip to the River Run Centre. Three parent helpers will drive the students.

Parent #1 can take 4 people at a time.
Parent #2 can take 5 people at a time.
Parent #3 can take 6 people at a time.

How many total trips will it take to get all the students and their teacher to the River Run Centre?

Challenge Question:

Parent #1 drives to the River Run Centre in 15 minutes; parent #2 takes 20 minutes; parent #3 takes 25 minutes. How long will it take to get everyone to the RRC?

*remember to think about the point, process and comment.