$12.25 pen set; 60% discount
As you want a 60% discount, you must find 40% of $12.25.40% of $12.25 is the same as 2/5 of $12.25.Now, 12.25 / 5 = 2.45And, 2.45 x 2 = 4.90--------------This means that 60% off $12.25 is $4.90.