Need on 10,11,and 12 and could you me find the common denominator if needed

(hurry! ) which expression is equivalent to the following complex fraction?

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

You are saving to buy a bicycle; so far you save 55.00. the bicycle costs 199.00. you earn 9.00 per hour at your job. which inequality represents the possible number of h hours you need to work to buy the bicycle?