How do you show price marked down one fourth sale price is 128 what was original price

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

Can someone check if i did this correct. it’s number 4 if you’re wondering.

The price of a lawn mower is x dollars. the store is having a 75% end of summer clearance sale. which expression can be used to find the clearance price of the mower? a) .25x b) .75x c) x - .25(75) d) x + .25(75)