Last Valentine's Day 100 ed rose cost r dollars. This Valentine's Day, 80 of the same kind of rd rose cost .2r dollars. If there were no discounts based on the size of the purchase, what was the percentage decrease in the cost of a red rose?

Question

anonymous · Answer

80 red roses cost .2r dollars
80=.2r
80/2=r
400=r
this means that this year r dollars will buy 400 roses.to find the percent change we must find out how much 100 roses would cost at this year and price

anonymous · Answer

And how are you suppose to find that?