SOLUTION: There were 200 fish in an aquarium, 99% of which were red. How many red fish must be removed to make the percentage of red fish 98%?

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Question 1069237: There were 200 fish in an aquarium, 99% of which were red. How many red fish must be removed to make the percentage of red fish 98%?
Found 3 solutions by josgarithmetic, MathTherapy, Alan3354:
Answer by josgarithmetic(39621) About Me  (Show Source):
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The aquarium has 198 red fish among the 200 fish.

Remove n of the red fish to reach 98% red fish in the aquarium.
%28198-n%29%2F%28200-n%29=0.98

highlight%28n=1%29
Remove one red fish.

Answer by MathTherapy(10555) About Me  (Show Source):
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There were 200 fish in an aquarium, 99% of which were red. How many red fish must be removed to make the percentage of red fish 98%?
Number of red fish to remove in order to have 98% red fish: highlight_green%28100%29

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
There were 200 fish in an aquarium, 99% of which were red. How many red fish must be removed to make the percentage of red fish 98%?
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Remove n red fish.
Then,
198-n/(200-n) = 0.98
198-n = 196 - 0.98n
2 = 0.02n
n = 100
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--> 98 red fish out of 100 fish