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Mathematics 21 Online
OpenStudy (anonymous):

Ben has 15 more music CD's than Sam. Together they have a total of 55 CD's. How many CD's does Sam have?

OpenStudy (albert0898):

Sam + 15 = Ben Sam + Ben = 55 Sam = 20 CD's The question clearly states that Ben has 15 more CD's than Sam. So If Sam has 20 CD's, Ben should have 35, and that outcome will come to 55 CD's.

OpenStudy (anonymous):

2x+15=55

OpenStudy (anonymous):

Thanks:)

OpenStudy (anonymous):

2x=40 x=20

OpenStudy (anonymous):

so its 20 CDs Sam has?

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

Thx:)

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