750 is what percent of 900? (Round to nearest tenth of a percent.) 16.6% 16.66% 83.33% 83.3% None of these. Amount of trade discount equals: List price x trade discount rate List price + trade discount rate List price divided by trade discount rate Net price x trade discount rate None of these The credit period is: Always shorter than the discount period Always 30 days from end of discount Always twice the length of discount period Long enough so buyers can always take a cash discount None of these