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Let the Legos Be :
- Blue = x
- Red = y
- Yellow = z
A.T.Q
» Blue + Red + Yellow = 30
» x + y + z = 30 ----(¡)
And ;
» Number of Blue Lego = Number of Red Lego
» x = y ----(¡¡)
And ;
» 2 × Number of Yellow = Number of Blue
» 2z = x
» z = ----(¡¡¡)
━━━━━━━━━━━━━━━━━━━━━━━━
• From (¡)
▣ x + y + z = 30
▣ x + x + = 30
▣ = 30
▣ 5x = 60
▣ x = 12
Red Legos is 12.
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