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Difference between revisions of "2010 AMC 12B Problems"

m (Problem 2)
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<center><asy>
 
<center><asy>
unitsize(2mm);
+
unitsize(4mm);
 
defaultpen(linewidth(.8pt));
 
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("8",(0,4),W);
 
label("5",(5/2,0),S);
 
label("5",(5/2,0),S);

Revision as of 11:47, 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