Question

If the net price of a stove is $900 and the trade discount rate is 40 percent, the list price is:

Answer 1

You do 900x0.4=360
then, 900-360=540.

Answer 2

or reason as follows: 40% off means you pay 60% of the price and
\[6\times 90=540\]

Answer 3

6x90= 540