Kim and Bill share a 18-ounce box of cereal. By the end of the week, Kim has eaten 1 6 of the box, and Bill has eaten 2 3 of the box of cereal. How many ounces are left in the box?

Answer 1

1/6 x 18 = 3 ounces

2/3 x 18 = 12 ounces

3+12 = 15

18-15 leaves 3 ounces left

Unless you meant to say Bill ate 2/3 of what was left after Kim ate 1/6 the box

Then 2/3 of 15 = 10 10+3 = 13 18-13 = 5 ounces left