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Marlis has 900 cards in her baseball collection. She sells 171 of her cards. What is the percent of decrease in the number of cards in her collection?

1 Answer

Oct 27, 2016

#19%# decrease in her collection

Explanation:

#171# of #900# represents #171/900# of her collection.

As a percentage
#color(white)("XXX")171/(9cancel(00))xx1cancel(00)%#

#color(white)("XXX")=(cancel(171)^19)/cancel(9)%#

#color(white)("XXX")=19%#

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