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Sagot :
What we call percentage is basically this:
We have a number, let's call it 'a' ( a can be 1,2,100,423432, whatever you want!)
Then we divide a by 100 and called the result 1%, in other words:
[tex]\begin{gathered} \frac{a}{100}=1\text{percent} \\ \Rightarrow100(\frac{a}{100})=100percent \end{gathered}[/tex]This is basically what a percentage is
So, in our problem, a=42in, as this is the final Kayla's height:
Then, we want to know what percentage of 42in is equal to 42in-36in=6in (change in Kayla's height)
[tex]\begin{gathered} x(\frac{42}{100})=6 \\ \Rightarrow x=(\frac{100}{42})\cdot6=14.3\text{ approx} \end{gathered}[/tex]So, the difference in percentage is: 14.3% which is the option C
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