Increase then decrease by the same r%: original value or r

1. A.
   $\frac{10000}{10000 - r^2}$
2. B.
   $\frac{10000 - r^2}{10000}$
3. C.
   $\frac{100}{100 - r^2}$
4. D.
   $\frac{100}{1 - r^2}$

Tap an option to check your answer.

1. A.
   31.6
2. B.
   33.6
3. C.
   30.6
4. D.
   39.6

Tap an option to check your answer.

1. A.
   31.6
2. B.
   33.6
3. C.
   30.6
4. D.
   39.6

Tap an option to check your answer.