SAT question a8fabad0 (Percentages)

Question

A waiter receives tips from each customer. On average, the tip is $15%$ of the customer's bill. At this rate, which of the following is closest to the tip the waiter can expect when a customer has a bill that is $ $78.20$ ?

68

Difficulty:Easy

A

$ $8.00$

B

$ $10.00$

C

$ $12.00$

D

$ $14.00$

College Board · Accepted Answer

The correct answer is C. Choice C is correct. If the bill is $ 78.20 , 15% of the bill can be found by multiplying 78.20 by the decimal conversion of 15% , 78.20 × 0.15 = 11.73 . The exact amount $ 11.73 is closest in value to $ 12.00 .

CookSAT · Answer

Note: The expression 15%\operatorname{of}78.20 directly computes the tip as 11.73, which is closest to 12.00.

Explanation

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Why the other choices are wrong

SAT Question a8fabad0: Percentages answer and explanation with Desmos solution

Explanation

Enter in Desmos:

Why the other choices are wrong