A dress or a pair of slacks whose price has been discounted by 40 percent and then slashed again by another 40 percent has actually been reduced in price by only 64 percent, not 80 percent.
Sehelai baju atau sehelai celana panjang yang harganya telah didiskon 40 persen lalu dipotong lagi 40 persen sebenarnya hanya dikurangi 64 persen saja, bukan 80 persen.