Do You Know Your Percentages?

$90\% = 0.9$

Now,

A.

$\Rightarrow$ $\dfrac{0.9}{0.9}$ $= 1$

B.

$\Rightarrow 0.9 \times 0.9 = 0.81$

So, $A = 1$ and $B = 0.81$

Therefore $A > B$ or $1 > 0.81$

A = $\frac{90\%}{90\%}$ , so now take a chocolate break it into say something 5 parts and take 5 parts so now what will you say we have taken whole chocolate, so A = $\frac{90\%}{90\%}$ = 1, B = $\frac{90}{100}$ * $\frac{90}{100}$ (Note: I am not gonna simplify first 90% and another 90% this will be okay but I am doing straight forward multiply first then simplify) so B = $\frac{8100}{10,000}$ so now simplify it so B = $\frac{81}{100}$ so know how is greater B = $\frac{81}{100}$ or A = 1 = $\frac{100}{100}$ so A is greater than B. 😊😊😊👌🏻

This problem will become much easier if you first write the percentages as decimals. In this case, the equations can be rewritten as $A=\frac { .9 }{ .9 } \\ B=.9\times .9$ Any non-zero number divided by itself returns a value of 1, so $A=1$ . Also, any number multiplied by a value < 1 reduces the value of the number, so $B<1$ . Therefore, your answer should be $\boxed{A}$ .