Hello there! In this question, in order to find the tip Armando leaves, all you have to do is multiply the percentage by the bill. In this case, it cost $12.50, and he leaves a 20% tip. 12.50 * 20% (0.2) is 2.5. There. Armando left a tip of $2.50. The answer is C: $2.50.
We know that the won 3/4. So that means that the remaining 1/4 is the games lost, which is 21. To find the total games played, we simply multiply 21 by 4 to get 4/4, or the total games.
