Question

there are 30 fish in a tank. the fish are either orange or red. there are 12 more orange fish than the number of red fish, how many fish are orange?how many fish are red?

Answer 1

Answer:

The number of red fish are 9

Step-by-step explanation:

X = number red fish

Y = number orange fish

then,

X + Y = 30

Y = 12 + X

then replacing Y

X + (12 + X) = 30

2X = 18

X = 9

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