jkev1
Paper cups come in packages of 24 or 30. Phyllis bought 12 packages and a total of 318 paper cups. How many of each size package did she buy?



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frx
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Set it as a system of equations 24x+30y=318 x+y=12 Solve the bottom equation for x Replace x with the result in the first equation

jkev1
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4 packages 24 cups and 7 packages of 30 cups?

frx
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dw:1349192200675:dw

jkev1
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there is no 12 answer :P

frx
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x= 12y
24(12y)+30y=318
y= 5
x+5=12
x=7
x=7, y=5

frx
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x (24 packages) + y (30 packages) equals a total of 12 packages

frx
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Do you get it? :)

jkev1
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yes than you.