Mathematics for IGCSE & O level - Percentages (Section 4 - No. 38)
If a shopkeeper buys 100 cups for $1.20 each and sells 80 with a 15% profit and the remaining 20 at 95c each, what is the total revenue from the sale of 80 cups?
$100.40
$105.60
$110.40
$112.00
คำอธิบาย
Selling price of 1 cup = $1.20 + 15% of $1.20 = $1.38. Total for 80 cups = 80 * $1.38