Heh help me please ive got a limited amount of time

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

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Una caja de galletas contiene 16 paquetes y cada una de estas tiene 12 galletas y se quieren repartir entre 6 niños ¿de cuantas galletas le toca a cada niño?