120 and the angle next to it are supplementary angles meaning they add up to 180. So take 180 - 120 to get 60. A triangle's angles add up to 180. So you take the 60's from the 180 to get the other sixty. In other words 180 - (60 + 60) = 60.
Hope this helped. I feel like I explained this kinda weird so ask questions if you have them.
65 divided by 7 is approximently 9, and 25 divided by 7 is approximently 3, so 9 plus 3 is 12, so Gracie must wash 12 cars to earn enough money to save 25 and spend 65!
