Synthia can buy watches at a price of Z dollars per watch, which she marks up by a certain percentage before selling. If she makes a total profit of X by selling Y watches, then in terms of Z and X and Y, what is the percent of the markup from her buy price to her sell price? Pick.
A) (YZ)/100X B) 100X-(YZ) C) 100X+(YZ) D) 100X*(YZ) E) 100X/(YZ)
Algebraic Solution:If she makes a total profit of X for Y watches, then that must be a profit of X/Y for each watch. That must be the markup above cost on each watch, the amount of the increase. Well, percent increase = (amount of increase)/(starting amount) x 100% = (X/Y)/Z *100 = 100X/(YZ)   Answer : 100X/(YZ)
<result>E</result>
Synthia can buy watches at a price of Z dollars per watch, which she marks up by a certain percentage before selling. If she makes a total profit of X by selling Y watches, then in terms of Z and X and Y, what is the percent of the markup from her buy price to her sell price?