Find the list price of a Kohler kitchen sink that has a net cost of $243.20 after trade discounts of 20/20.
Use a net cost equivalent. Start by finding the percent paid, using complements.
=.64 remains 1net cost equivalent2
Thus 64% of the list price was paid. Find the list price with the standard percent formula.
R × B = P
64% of list price = $243.20
or
B = \frac{P}{R} = \frac{243.2}{\mathbf{.64}} = $380 list price
The list price of the sink is $380.