GMAT Problem Solving (PS) | Re: To halve the value of the expression above by doubling exactly one of

To halve any expression, we can just double the denominator in the expression. In this case the denominator is \(\frac{x}{yz}\)

To double any expression, the numerator can be multiplied by 2 which is "x" in this case.

Hence we can just double the variable "x" (numerator in the denominator) so option C

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