Problema Solution
A vendor is offering 400 widgets for $1200 or 1200 widgets for $2500. What percent is the discount per widget by buying 1200 at a time instead of 400?
Answer provided by our tutors
if 400 widgets are sold for $1200 then the cost per widget is 1200/400 = $3
if 1200 widgets are sold for $2500 then the cost per widget is 2500/1200 = $25/12
the discount is
((3 - 25/12)/3)100 = 30.56%