Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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The ratio of rock music to total CD's that Ella owns is 25/40.Paolo has 50 rock music CD's.The ratio of the rock music to total CD's in his collection is equivalent to the ratio of rock music to total CD's in Ella's collection.How many total CD's does Paolo own?
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