Tim takes his 3 children trick or treating. They are out for 4 hours. Each hour they visited 5 houses. Each house gives 3 treats per kid. How many treats do his children get in total? Give the rationale and then the answer.
Let's think step by step. They visit 4 * 5 = 20 houses. That means each child get 20 * 3 = 60 treats. So in total they get 60 * 3 = 180 treats.. The answer is: 180.

Krishna and Callum are playing a game where they earn 10 points if they win any round. If they played eight matches and Krishna won 3/4 of the matches, what is the total number of points that Callum earned? Give the rationale and then the answer.
Let's think step by step. Krishna won 3 / 4 * 8 rounds = 6 rounds. If they played eight rounds, Callum won 8 rounds - 6 rounds = 2 rounds. If a round earns one 10 points, Callum got 2 rounds * 10 points / round = 20 points.. The answer is: 20.

Phil likes to collect baseball cards. He buys a pack of twenty each week for a year, but then loses half of them one day in a fire. How many baseball cards does Phil have left? Give the rationale and then the answer.
Let's think step by step. Since there are 20 cards in a pack and 52 weeks in a year, Phil starts by collecting 20 * 52 = 1040 baseball cards. He then loses half of them for 1040 / 2 = 520 cards remaining.. The answer is: 520.