A tape costs $4 less than a CD. Oshkosh bought one CD and five tapes. If the total cost was $70 what was the price of the CD?

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Answer 1 · 2018-06-25T09:38:39

If a CD costs #$x# then a tape costs #$(x-4)#

One CD and five tapes would be

#x+5(x-4)#

#x+5x-20#

#6x-20#

This equals $70

#6x-20=70#

#6x=90#

#x=15#

A CD costs $15