(180% of ?)![]()
Let (180% of Z) ![]()
∴ (180/100 × Z) ![]()
⇒ (18/10 × Z) = 504 × 2
⇒ Z = 504 × 2 × 10/18
⇒ Z = 504 × 10/9
⇒ Z = 560
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