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8 October, 20:51

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?

Which is a system of equations to model the problem if x represents the number of angelfish Yves bought and y represents the number of parrotfish he bought?

A.

x + y = 6

y = 420x

B.

x + 6y = 420

y = 6x

C.

x - y = 420

y = 6x

D.

x + y = 420

y = 6x

+4
Answers (1)
  1. 8 October, 22:01
    0
    Given:

    420 tropical fishes

    angel fish = x

    parrot fish = 6x

    x + y = 420

    y = 6x Choice D.

    x + y = 420

    y = 6x

    x + 6x = 420

    7x = 420

    x = 420 / 7

    x = 60 number of angelfish

    y = 6x

    y = 6 (60)

    y = 360 number of parrot fish
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