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Arithmetic and Geometry Practice
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If 60% of a is equal to 120% of b, then 2a - 4b = ?
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A
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💡 Explanation:
If 0.6a = 1.2b, then a = 2b. Substituting a = 2b into the expression 2a - 4b gives 2(2b) - 4b, which is 4b - 4b = 0. Therefore, the result is always zero regardless of the values of a and b.