A bus travelling at a steady speed takes 2and half hours for a certain journey how long will a car take if it travels at three times the speed of the bus

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With finding limits of multi variable !

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?