<p>a certain physical fitness test lasts a total of 3 hours. each part of the test requires the same amount of time, and 12 minute breaks are included between consecutive parts. if there are a total of 3 breaks during the 3 hours, what is the required time in minutes, for each part of the test?</p>
<p>(a) 33
(b) 36
(c) 38
(d) 45
(e) 48</p>
<p>answer is B</p>
<p>Draw it. You said we have 3 breaks in the 3 hours right? OK, we’ll make a quick drawing. The breaks will be denoted as X and each part of the fitness test will be denoted as O.</p>
<p>X O X O X O X</p>
<p>Is that right? Yes, it is. 3 breaks. And as a result, we find out that there are 4 portions of the fitness test too. OK, the test was 3 hours right? Deduct the time taken in breaks, therefore 180 - 3(12) = 144 minutes. We have 144 minutes for the 4 portions of the fitness test. We want the amount of time for each one right? Divide by 4. 144/4 = 36. Choice B.</p>
<p>Just type this in your calculator:</p>
<p>(180-3*12)/4=36</p>
<p>Do you see where these numbers came from? Especially the 4 (the most common mistake is to divide by 3).</p>
<p>oh ok thanks :)</p>