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05-09-2015
Mathematics

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Yves bought 420 tropical fish for a museum display. He bought 6 times as many parrotfish as angelfish. How many of each type of fish did he buy?

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05-09-2015

The ratio of parrot fish to angelfish is 6:1
Lets say that a single fish = x, so the equation is...

6x + 1x = 420

7x = 420 (divide each side by 7)

7x/7 = 420/7

x = 60

Parrot fish = 6x = 6*60 = 360
Angel fish = 1x = 1*60 = 60

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