A library has 1240 reference book. there are 16 bookshelves for the reference books. if 128 reference books are in use and 84 reference books are in the collection box how many reference books are on the shelf?
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Can someone me i’m confused. will give brainliest and a whole bunch of points

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?

Rewrite so the subject can be y in the formula d=m-y/y+n