Mathematics for IGCSE & O level - Percentages (Section 2 - No. 25)
If the value of an item is reduced by 11% annually and its original value is $3500, what is its value after 7 years?
$1475.27
$1485.57
$1495.63
$1500
คำอธิบาย
Value = 3500 * (1-0.11)^7 = 3500 * 0.424 = $1484