ATQ, ?% of 549.83 – 18.05 × 31.96 = 44.94% of 479.84 – 13.98 × 33.13 ?% of 550 – 18 × 32 ~ 45% of 480 – 14 × 33 ?% of 550 – 576 ~ 216 – 462 ?% of 550 ~ -246 + 576 ? ~ 330 ÷ 550 × 100 ? ~ 60
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