A florist buys at $18per dozen. If she sells them at $1.20 each,express her loss as a percentage of her selling price
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per dozen cost=18
per piece cost=18÷12=1.50
sp of per piece =1.20
loss percentage =cp-sp÷cp × 100 %
=1.50-1.20÷1.50 x100%
=20%
per piece cost=18÷12=1.50
sp of per piece =1.20
loss percentage =cp-sp÷cp × 100 %
=1.50-1.20÷1.50 x100%
=20%
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