The total price of 4 equally priced markers is $6.40. If 10 or more markers are purchased, the cost per marker is decreased by .25 for the entire order. How much will 12 of these markers cost?

Question

anonymous · Answer

I came up with 14.40 as the answer. Am I wrong?

experimentx · Answer

0.75 * 12 * 6.40

experimentx · Answer

must be 
total price  - 25 % of total price
total price =  quantity * rate

anonymous · Answer

6.40 is the price of 4 markers together 
1.60 is the price of each individual marker.