Which system of equations models the problem if x represents the number of angelfish yves bought and y represents the number of parrot fish he bought?

yves bought 420 tropical fish for a museum display. he bought 6 times as many parrot fish as angelfish. how many of each type of fish did he buy?

a. ( x + y +420 y= 6 x)
b. ( x- y= 420 y= 6x)
c. x + 6y= 420 y= 6x)
d. x + y = 6 y= 420x)

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