Lizzy: It takes 50 large jelly beans to fill up a large drinking glass. It takes half that amount to fill up a small drinking glass. If there are 5 large drinking glasses and 3 small ones, how many jellybeans will it take to fill them up?.
Me: Hmmm, let me think. I think this is the detailed solution:
A small drinking glass takes half the amount of a large glass that needs 50 so it will take 50 / 2 = 25 jellybeans. 5 large glasses need to be filled so they will take 5 * 50 = 250 jelly beans. There are 3 small glasses that need to be filled so they will take 3 * 25 = 75 jelly beans. All total, to fill all the glasses it will take 250 + 75 = 325 jellybeans. Final answer: 325.