Difference between revisions of "2010 AMC 12B Problems"

Revision as of 10:47, 2 April 2010

Problem 1

Makarla attended two meetings during her $9$ -hour work day. The first meeting took $45$ minutes and the second meeting took twice as long. What percent of her work day was spent attending meetings?

$\textbf{(A)}\ 15 \qquad \textbf{(B)}\ 20 \qquad \textbf{(C)}\ 25 \qquad \textbf{(D)}\ 30 \qquad \textbf{(E)}\ 35$

Solution

Problem 2

A big $L$ is formed as shown. What is its area?

$[asy] unitsize(4mm); defaultpen(linewidth(.8pt)); draw((0,0)--(5,0)--(5,2)--(2,2)--(2,8)--(0,8)--cycle); label("8",(0,4),W); label("5",(5/2,0),S); label("2",(5,1),E); label("2",(1,8),N); [/asy]$

$\textbf{(A)}\ 15 \qquad \textbf{(B)}\ 20 \qquad \textbf{(C)}\ 25 \qquad \textbf{(D)}\ 30 \qquad \textbf{(E)}\ 35$

Solution

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Difference between revisions of "2010 AMC 12B Problems"

Revision as of 10:47, 2 April 2010

Problem 1

Problem 2

@@ Line 10: / Line 10: @@
 <center><asy>
-unitsize(2mm);
+unitsize(4mm);
 defaultpen(linewidth(.8pt));
-draw((0,0)--(5,0)--(5,2)--(3,2)--(3,8)--(0,8)--cycle);
+draw((0,0)--(5,0)--(5,2)--(2,2)--(2,8)--(0,8)--cycle);
 label("8",(0,4),W);
 label("5",(5/2,0),S);