SOLUTION: The membership of a tennis club decreased by 20% to 48. How many people left the club

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Question 1025447: The membership of a tennis club decreased by 20% to 48.
How many people left the club
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P-%2820%2F100%29P=48
%28100%2F100%29P-%2820%2F100%29P=48
%2880%2F100%29P=48
But you want to find the 20% who left so divide both sides by 4.
%2820%2F100%29P=12
12 people left