Help on ACT math problem!!

Test Preparation
1

<p>Can somebody please explain why the answer is C to problem #51?</p>

<p>Go to <a href="http://media.act.org/documents/preparing.pdf%5B/url%5D"&gt;http://media.act.org/documents/preparing.pdf&lt;/a> for the problem.</p>

<p>Thanks!</p>

2

<p>It takes her two hours to make a small frame and three hours to make a large frame, so the amount of time needed to make 2 small frames and 4 large frames is 2(2) + 4(3) = 16 hrs. So Marcia donates $48.</p>

<p>Marcia made 30(2) + 70(4) = $340 in profit that week.</p>

<p>The percentage donated is 48/340 = .1412, round off to 14%, C.</p>