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Mathematics for IGCSE & O level - Percentages (Section 6 - No. 42)
Find the original quantity if a quantity is decreased by 5% and it is now $90.
$94.74
$95.00
$90
$90.47
解释
If x * 0.95 = 90, then x = 90 / 0.95 = 94.74
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