Derrick's dinner bill, including an 18% tip, is $15.34. What was the amount of the bill before the tip?

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Hey mate here is the answerthe correct answer is b may it will you

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.