Ethel is arranging rides so that 27 members of her club can go bowling. Some people can ride in a van that belongs 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?

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?