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Michael just finished a great meal in a restaurant in Wisconsin. The sales tax in Wisconsin 5%, percent, and it is customary to leave a tip of 15%, percent for the waiter. The tip amount is calculated on the price of the meal before the tax is applied. Sales tax is not calculated on tips.
If Michael left $18 on the table to cover his meal, tax, and tip, what was the price of his meal before tax and tip?

Answer :

x + x*0.05 + x*0.15 = 18
0.05 indicates 5% tax, 0.15 indicates 15%tip
distribute,
x(1+0.05+0.15) = 18
x(1.20) = 18
solve for x

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