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2 answers:
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Answer:
31.35%
Step-by-step explanation:
<h3><u>Initial</u><u> </u><u>reading</u><u>:</u></h3>In the box, there are:
- 6 Black pens
- 4 blue pens
- 7 red pens
Total number of pens in the box = 6 + 4 + 7
<u>= 17</u>
<em>If we count pens as outcomes the total number of possible outcomes are 17</em>.
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<h3><u>New</u><u> </u><u>reading</u><u>:</u></h3>Clarissa takes out a black pen from the box.
That reduces the number of black pens by 1 which increases the total number of pens by 1 as well.
So now:
- Number of black pens = 6 - 1 =<u> 5 </u>
- Total number of pens = 17 - 1 =<u> </u><u>16</u><u> </u>
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<h3><u>Probability</u><u>:</u></h3>If we want her to pick up a black pen, and she ends up picking one. So, we can say that the outcome is in our favor.
That makes it,
- the number of favorable outcomes = number of black pens
= 5
- and total outcomes = Total number of pens
= 16
For showing it as some percent we'll just multiply the fraction by 100
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<h3><u>As</u><u> </u><u>a</u><u> </u><u>percent</u><u>:</u></h3>