James works as a waiter. he served meals with bills of 23.59, 40.65, 30.50, and 15.68. if his total for tips was 17.67, what percent tip did he receive for serving these meals? round the answer to the nearest percent

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.