Answer:

Step-by-step explanation:
Given
Teenagers = 15,153,805
Doing Well = 12% ---- <em>From the comment on this question</em>
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Required
Determine the number of teenagers in this category
To solve this question, we simply multiply the total number of teenagers by the given percentage.
i.e.



<em>Approximate</em>

Hence, there are 1818457 in this category.
<em>NB: None of the options answer this question</em>
Answer:
54%
Step-by-step explanation:
129/240 = 0.5375 (divided to find the % change)
0.5375 * 100 (to convert decimal to percent form)
53.7 which is rounded to 54 percent (I needed to round it to the nearest whole percent number)
1/49=x^2 where x is the side of the square
1/49=(1/7)^2, so the side length of the square is 1/7