SAT Question 6e4a60dd: Percentages answer and explanation with Desmos solution

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Math - Percentages - Find Percent Of ValueMath Practice - Problem Solving And Data Analysis - Percentages - Find Percent Of Value83 questions

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Rita's total bill at a restaurant was $ $25.00$ , including tax. If she left a tip of $20%$ of the total bill, what was the amount of the tip?

Difficulty:Easy

$ $3.50$

$ $4.00$

$ $4.50$

$ $5.00$

Explanation

Correct answer: D.

Choice D is correct. The total bill was $ $25.00$ . The percentage $20%$ is equivalent to the decimal $0.2$ . The tip is the product of the percentage and the total bill; therefore, $0.2 \times 25 = 5$ , so the tip was $ $5.00$ .

Desmos solution:

Note: The expression 20%\operatorname{of}25 directly computes the tip amount, which Desmos evaluates to 5.

Enter in Desmos:

$20% of 25$

Reviewed and rewritten by CookSAT

Why the other choices are wrong

Choice A

Choice A is incorrect and may be the result of incorrectly converting the given percentage or a calculation error.

Choice B

Choice B is incorrect and may be the result of incorrectly converting the given percentage or a calculation error.

Choice C

Choice C is incorrect and may be the result of incorrectly converting the given percentage or a calculation error.