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The ratio of the number of Julia's sports cards to the number of Alexis sports cards is 1:3. Together, they have 28 sports cards. How many sports cards does Julia have?

Respuesta :

TJones99
Julia has 7 sports cards.
freshpixel
1:3 means Alexis have 3 times more sports cards than Julia.
x = Julia
3*x = Alexis
x + 3*x = 28
4*x = 28
x = 7 (Julia)

and 21 for Alexis

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