Concept:A discount of 10% means the buyer pays only 90% of the original cost.Solution:Original cost = GH₵ 600.00, discount rate =10%Percentage to be paid =100%−10%=90%Selling price =10090×600=90×6=540, i.e. GH₵ 540.00Key point: GH₵ 60.00 (option A) is the discount itself, not the selling price.Answer:Option D (GH₵ 540.00)