If the watering can can hold 16 cups of water, and is only half full, then it has 16/2 cups of water in it, or 8 cups.
Spread equally over 15 plants, we want to know how many cups of water per plant she's giving. Therefore, each plant gets 8/15 cup of water. Hope this helps! :)
Simply think of each fold as doubling the number of holes. So since we have 6 folds, that will be 2^6 and then we have 2 holes in those folds, which makes 2*2^6 == 2^7 == 128 holes. Cheers.
