Ethel is arranging rides so that 27 members go bowling. Some people can ride in a van that belonges to the center where they meet the rest must ride in cars if 12 can go in the van and 5 can go in each car how many cars will they need?
This is because the only possible combination of cars and vans that add up to the total seating of 27 people is one van (12 seats) and three cars (15 seats).
