Question

A florist buys roses at $18 per dozen .if she sells them at 1.20 each. Express her Lose as a percentage of her selling price

Answer 1

Here is your answer

CP of One Rose = 18/12 = 1.50

SP of one Rose = 1.20

Loss = 1.50 - 1.20. = 0.30

Loss % = Loss x 100 / CP

= 0.30 x 100 /1.5

= 20% Answer

Hope it helps you

Answer 2

Loss%=loss ×100/cost price

Loss= cost price-selling price

Cost price = sells at 18 dollars

Dozen=12 so,cost price of 1 rose=18/12=1.5

Selling price=1.20 or 1.2

Now so, loss =1.5-1.2=0.3

We know that loss%formula written above so,0.3×100/1.5=3/10×100/15/10=30/15/10=30×10/15=20

Therefore loss%=20%

Hence proved

Hope you understand