Patrick saved $500. he received 25% from his birthday, saved 30% of the remainder from his allowance, and earned the rest of it by mowing lawns. how much of his savings did he earn by mowing lawns?

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?