Quick SAT Math Question

Test Preparation SAT Preparation
1

<p>Thank you for any help ahead of time.</p>

<p>I've noticed that I've been having a couple of issues with problems that involve using proportions of sorts. </p>

<p><a href="http://www.collegeboard.com/prod_downloads/sat/sat-preparation-booklet.pdf%5B/url%5D"&gt;http://www.collegeboard.com/prod_downloads/sat/sat-preparation-booklet.pdf&lt;/a>
page 67, problem 18.</p>

2

<p>Well heres what I did:</p>

<p>Make PS=x
You know what PT=2/5x so TS=3/5x</p>

<p>To make the triangle equal an area of 7, I just made it RS=7 and so 3/5x would have to equal 2 in order to make that triangle’s area equal 7. So we now know that x= 10/3.</p>

<p>Area of rectangle is the length (10/3) x width (7) which equal 70/3. Not sure if my way is very mathematical, but it works.</p>

3

<p>Great! thanks for your help. I was stuck trying to get a ratio between PT and PS.</p>

4

<p>Alternatively, We know that (1/2)3/5x multiplied by the height will give us 7.</p>

<p>So 3/5xh=14</p>

<p>xh=70/3</p>

<p>This might be easier :)</p>

5

<p>Super cool problem! Thanks so much for posting, that totally had me thinking for a minute!</p>

6

<p>Hey guys, another quick question:
<a href=“College Board - SAT, AP, College Search and Admission Tools”>College Board - SAT, AP, College Search and Admission Tools;

<p>page 32, problem 18.</p>