Difference between revisions of "2006 AMC 12B Problems/Problem 4"
(→Alternative Solution) |
(→Alternative Solution) |
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So <math> 20 - (8+5+3+2+1) = 1 </math> | So <math> 20 - (8+5+3+2+1) = 1 </math> | ||
<math> 20* \frac{x}{100}=1 </math> | <math> 20* \frac{x}{100}=1 </math> | ||
− | By simplifying to "x", we get <math> | + | |
+ | By simplifying to "x", we get <math>5</math> | ||
== See also == | == See also == | ||
{{AMC12 box|year=2006|ab=B|num-b=3|num-a=5}} | {{AMC12 box|year=2006|ab=B|num-b=3|num-a=5}} | ||
{{MAA Notice}} | {{MAA Notice}} |
Revision as of 20:05, 26 July 2013
Problem
Mary is about to pay for five items at the grocery store. The prices of the items are 7.99$ , 2.99$ , and 0.99$ that she will receive in change?
Solution
The total price of the items is
Alternative Solution
We can round the prices to , , , , and .
So
By simplifying to "x", we get
See also
2006 AMC 12B (Problems • Answer Key • Resources) | |
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 |
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions.