If the trade discount series is 40%/15%/10% and the net price is $555, what is the list price?

A) $916
B) $1,209
C) $1,421
D) $708
E) $591

The trade discount series of 40%/15%/10% means that the net price is obtained after applying these discounts consecutively on the list price. To find the list price, we reverse the process starting from the net price of $555. First, divide by (1 - 0.10) to reverse the 10% discount, then divide by (1 - 0.15) to reverse the 15% discount, and finally, divide by (1 - 0.40) to reverse the 40% discount. This calculation gives us the list price, which is $1,209.