Ada, Betty, Chris, and David have $45 in total. If Ada gets $2 from Betty, Chris triples his money,
and David 's money is cut by half, four of them
have the same amount. Initially Ada has $

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?