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At the deli Jimmy bought $17 worth of food. The tax on the bill was 6% and he left an 18% tip on the pre-tax amount.

Which expression can be used to calculate the tip Jimmy left?
A) .18(17)
B) .18[17 +(.06)(17)]
C) .18 (17 + .06)
D) 18[17 + 6(17)]

Respuesta :

MadBulgarian
A.
since the tip was a procentage from the pre-tax amount
The answer is A.  To calculate the tip left, multiply the price ($17) by the % tip (18%).  17*0.18 = 3.06

To calculate the total, multiply 17 by 1.06
17 * 1.06 = 18.02
Add 18.02+3.06
Total including tax and tip is $21.08
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