https://artofproblemsolving.com/wiki/api.php?action=feedcontributions&user=Aallen&feedformat=atomAoPS Wiki - User contributions [en]2022-01-22T00:31:54ZUser contributionsMediaWiki 1.31.1https://artofproblemsolving.com/wiki/index.php?title=2011_AMC_8_Problems/Problem_13&diff=441382011 AMC 8 Problems/Problem 132012-01-04T01:43:12Z<p>Aallen: Created page with "The overlap length is 5, so the shaded area is 5 * 15 =75. The area of the whole shape is 25*15 = 375 The fraction 75/375 reduces to 1/5 or 20%."</p>
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<div>The overlap length is 5, so the shaded area is 5 * 15 =75.<br />
The area of the whole shape is 25*15 = 375<br />
The fraction 75/375 reduces to 1/5 or 20%.</div>Aallenhttps://artofproblemsolving.com/wiki/index.php?title=2011_AMC_8_Problems/Problem_11&diff=441372011 AMC 8 Problems/Problem 112012-01-04T01:41:41Z<p>Aallen: Created page with "Average the differences between the two times. 10, -10, 20, 30, -20 The sum is 30. Divide by 5 = 6."</p>
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<div>Average the differences between the two times.<br />
10, -10, 20, 30, -20<br />
The sum is 30. Divide by 5 = 6.</div>Aallenhttps://artofproblemsolving.com/wiki/index.php?title=2011_AMC_8_Problems/Problem_9&diff=441362011 AMC 8 Problems/Problem 92012-01-04T01:40:26Z<p>Aallen: Created page with "Look at the possibilities. The list is short enough. 1+2 = 3 1+4 = 5 1+6 = 7 3+2 = 5 3+4 = 7 3+6 = 9 5+2 = 7 5+4 = 9 5+6 = 11 Possible outcomes: 3, 5, 7, 9, 11 for a total of 5."</p>
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<div>Look at the possibilities. The list is short enough.<br />
<br />
1+2 = 3<br />
1+4 = 5<br />
1+6 = 7<br />
3+2 = 5<br />
3+4 = 7<br />
3+6 = 9<br />
5+2 = 7<br />
5+4 = 9<br />
5+6 = 11<br />
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Possible outcomes: 3, 5, 7, 9, 11 for a total of 5.</div>Aallenhttps://artofproblemsolving.com/wiki/index.php?title=2011_AMC_8_Problems/Problem_7&diff=441342011 AMC 8 Problems/Problem 72012-01-04T01:36:18Z<p>Aallen: Created page with "Assume that the area of each square is one. Then, the area of the shade region in the top left square is 1/4. The area of the top right shaded region is 1/8. The area of the b..."</p>
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<div>Assume that the area of each square is one. Then, the area of the shade region in the top left square is 1/4. The area of the top right shaded region is 1/8. The area of the bottom left shaded region is 3/8. And the area of the bottom right shaded region is 1/4. Add the four fractions: 1/4 + 1/8 + 3/8 + 1/4 = 1. The four squares together have an area of 4, so the percent is 1/4 = 25%.</div>Aallen