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Alice Small and Rita Flynn sold a total of 400 cosmetic kits. Alice sold three times as many kits as Rita. How many did Rita sell?

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Rita sold x cosmetic kits.
Alice sold three times as many kits as Rita, so she sold 3x cosmetic kits.
They sold a total of 400 cosmetic kits.

\(x+3x=400 \\ 4x=400 \\ x=\frac{400}{4} \\ x=100\)

Rita sold 100 cosmetic kits.

rita sold 100 cosmetic kits


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