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?
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Mary is about to pay for five items at the grocery store.  The prices of the items are <math>\</math> <math>7.99</math>, <math>\</math> <math>4.99</math>, <math>\</math> <math>2.99</math>, <math>\</math> <math>1.99</math>, and <math>\</math> <math>0.99</math>.  Mary will pay with a twenty-dollar bill.  Which of the following is closest to the percentage of the <math>\</math> <math>20.00</math> that she will receive in change?
  
 
<math>
 
<math>

Revision as of 10:02, 3 December 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?

$\text {(A) } 5 \qquad \text {(B) } 10 \qquad \text {(C) } 15 \qquad \text {(D) } 20 \qquad \text {(E) } 25$

Solution

The total price of the items is $(8-.01)+(5-.01)+(3-.01)+(2-.01)+(1-.01)=19-.05=18.05$

$20-18.05=1.95$

$\frac{1.95}{20}=.0975 \Rightarrow \text{(C)}$

See also

2006 AMC 12B (ProblemsAnswer KeyResources)
Preceded by
Problem 3
Followed by
Problem 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
All AMC 12 Problems and Solutions
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