Write k reduced by 283 equals n as an equation

In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition? a) 6 b) 8 c) 14 d) 20

Anyone know? will mark brainliest if correct!

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?