Difference between revisions of "2006 AMC 12B Problems/Problem 4"
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== Problem == | == Problem == | ||
| + | Mary is about to pay for five items at the grocery store. The prices of the items are <math>\</math> 7.99, <math>\</math> 4.99, <math>\</math> 2.99, <math>\</math> 1.99, and <math>\</math> 0.99. Mary will pay with a twenty-dollar bill. Which of the following is closest to the percentage of the <math>\</math>20.00 that she will receive in change? | ||
| + | |||
| + | <math> | ||
| + | \text {(A) } 5 \qquad \text {(B) } 10 \qquad \text {(C) } 15 \qquad \text {(D) } 20 \qquad \text {(E) } 25 | ||
| + | </math> | ||
== Solution == | == Solution == | ||
| + | The total price of the items is <math>(8-.01)+(5-.01)+(3-.01)+(2-.01)+(1-.01)=19-.05=18.05</math> | ||
| + | |||
| + | <math>20-18.05=1.95</math> | ||
| + | <math>\frac{1.95}{20}=.0975 \Rightarrow \text{(C)}</math> | ||
== See also == | == See also == | ||
* [[2006 AMC 12B Problems]] | * [[2006 AMC 12B Problems]] | ||
Revision as of 08:28, 14 November 2007
Problem
Mary is about to pay for five items at the grocery store. The prices of the items are 
7.99, 4.99, 2.99, 1.99, and 0.99. Mary will pay with a twenty-dollar bill. Which of the following is closest to the percentage of the 20.00 that she will receive in change?
Solution
The total price of the items is 
