CD DVD shelf

George had music CDs and DVDs stored on the shelves. There are a total of 64. How many DVDs are on the shelf if there are seven times less than a CD?

Final Answer:

d =  8

Step-by-step explanation:

c+d=64 d = c/7  c+c/7=64  8c=448  c=8448=56  c=56  d=c/7=56/7=8



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