<p>How can I answer this problem:</p>
<p>32 is 40 percent of what number?</p>
<p>A: 12.8
B: 128
C: 80
D: 800</p>
<p>We change “is” to “=” and “40 percent” to “.4.”</p>
<p>32 = (.4)*x</p>
<p>where “x” is the number.</p>
<p>If we divide both sides by .4, we get x equal to 80.</p>
<p>i guess u mean x is what percent of y</p>
<p>^ Yes, sorry.</p>
<p>what about-</p>
<p>what percent of 5/8 is 1/8?</p>
<p>is …means equals
of…means multiply</p>
<p>x/100 resembles the percent, x, in decimal form</p>
<p>(x/100)(5/8) = (1/8)
solve for x
x = the percent</p>
<p>a bit more clear now- thanks!</p>
<p>
</p>
<p>you find the fraction and then x100</p>
<p>1/8 / 5/8 = .2
.2 x 100 = 20%</p>
<p>Wow this problem very easy, just look at the answer choices. 12.8, and 800 are out of the window. And 128 seems a bit high so quickly check what .4x80 is. Bam its 32. [C]</p>
<p>For these types of problems, before looking at the answer choices think of a reasonable answer (ball park it), and quickly check the answer choices closest to your guess. This method isn’t error prone, and its reasonably fast.</p>