logic or math on numbers

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There are 200 fishes in a pond, 99% of which were red. How many red fishes must be removed to make the percentage of red fishes are 98%? Thanks in advace

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Total number of red fishes $= \frac {99}{100} \times 200 =198 $

Number of red fishes removed $=x$

New total number of fishes $= 200 - x$

New total number of red fishes = $198 - x$

Now, relate to the new percentage, i.e, 98%

New number of red fishes $= \frac {98}{100} \times (200-x) =198-x $

↑SPOILERS↓

x = 100