Mathematics for IGCSE & O level - Percentages (Section 1 - No. 10)
A store offers a 20% discount. If the sale price of an item is $80, what was the original price?
$60
$96
$100
$120
ব্যাখ্যা
$80 represents 80% of original price. x*0.80 = 80. x = 100