SOLUTION: Every day, 30% of the fish in a fish store are sold. There are 1764 fish left in the store at the end of the day on Tuesday. How many were there when the store opened on Monday?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Every day, 30% of the fish in a fish store are sold. There are 1764 fish left in the store at the end of the day on Tuesday. How many were there when the store opened on Monday?       Log On


   

Question 1149746: Every day, 30% of the fish in a fish store are sold. There are 1764 fish left in the store at the end of the day on Tuesday. How many were there when the store opened on Monday?



Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +n+ = number that had Monday at opening
+1764+=+n%2A%28+1+-+.3+%29%5E2+
+1764+=+.49n+
+n+=+3600+
There were 3,600 fish mon AM
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check:
+.7%2A3600+=+2520+
+.7%2A2520+=+1764+
OK