Sarah's restaurant bill came to US$18.80. She usually leaves a 15% tip. How much tip did

Mathematics

1 answer:

skelet666 [1.2K]3 years ago

7 0

The tip should be $2.82, making the entire payment $21.62

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Solve for x.

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How to get answer:

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FromTheMoon [43]

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ankoles [38]

Note: Since the symbols for greatest integer function (GIF) and least integer function (LIF) are not given, I will be using the words GIF and LIF in the solution

GIF x means largest integer less than or equal to x, and LIF x means least integer greater than or equal to x.

We need to determine which expressions are equal

Option 1: GIF 4.9 and LIF 3.1

GIF 4.9 = 3

LIF 3.1 = 4

Hence GIF 4.9 ≠ LIF 3.1

Option 2: GIF 15.2 and GIF 14.8

GIF 15.2 = 15

GIF 14.8 = 14

Hence, GIF 15.2 ≠ GIF 14.8

Option 3: GIF -6 and LIF -6

GIF -6 = -6