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Audrey has some guppies in a fish tank. The ratio of the orange guppies to silver guppies is 3:5. She has 12y orange guppies. Write the number of silver guppies she has in terms of y.
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Audrey has some guppies in a fish tank. The ratio of the orange guppies to silver guppies is 3:5. She has 12y orange guppies. Write the number of silver guppies she has in terms of y.

User Allons
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By proportion:-

3/5 = 12y / xy = 12/x

3x = 5*12 = 60
x = 20

so there are 20y silver guppies in the tank.


User JAQFrost
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