SOLUTION: Mr. Carver’s bill at a restaurant was $78.60, including tax. He left 15% of the amount of the bill as a tip for the server. Which amount is closest to the 15% tip Mr. Carver left

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Question 1199236: Mr. Carver’s bill at a restaurant was $78.60, including tax. He left 15% of the amount of the bill as a tip for the server. Which amount is closest to the 15% tip Mr. Carver left?

Found 2 solutions by josgarithmetic, greenestamps:
Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
B, the base bill amount before tax, before tip.

NEED to know the tax rate. Why you not include this value? Assuming 8% tax rate,
B%2B0.08B=76.80
-
%281.08%29B=76.80
B=76.80%2F1.08

The 15% tip should be close-to 0.15%2876.8%2F1.08%29 dollars.

Answer by greenestamps(13198) About Me  (Show Source):
You can put this solution on YOUR website!


Since no tax rate is given, in order to solve the problem we have to assume the 15% tip was on the total including tax.

.15(78.60) = 11.79

ANSWER: the tip was $11.79

Note if the answer choices had been shown, we would have been able to determine whether we are interpreting the given information correctly....