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The costs of 2 sound systems were decreased by $10. The original costs of the systems were $90 and $60. Without calculating, which had a greater percent of decrease? Explain.
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The costs of 2 sound systems were decreased by $10. The original costs of the systems were $90 and $60. Without calculating, which had a greater percent of decrease? Explain.

User Nauti
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The 60$ system had a greater percentage decrease because it was a lower number to begin with. Taking the same portion out of two different numbers will always be a greater decrease for the lower number.
User SKFox
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