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%?
----------
Remove n red fish.
Then,
198-n/(200-n) = 0.98
198-n = 196 - 0.98n
2 = 0.02n
n = 100
----------------
--> 98 red fish out of 100 fish