Shyam wants to make a sold brick shape structure from 400 wooden cubes of unit volume each. If the sides of the solid brick have the ratio 1:2:3, then the maximum number of cubes, which can be used will be
A
400
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B
288
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C
300
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D
384
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Solution
The correct option is A384 Let 4he side are x,2x,3x v=(x)(2x)(3x)=6x3 ATQ6x3≤400⇒x3≤6623⇒x=64 ∴x=64 maximum number of cubes =6x3=6×64=384