Discussion

Question:

If decreasing 70 by X percent yields the same result as increasing 60 by X percent, then X percent of 50 is

Explanation:

70 - $\frac{x}{100}$ × 70 = 60 + $\frac{x}{100}$ × 60

∴ 10 = $\frac{70 x}{100}$ + $\frac{60 x}{100}$

∴ x = $\frac{100}{13}$

Calculating x % of 50,

$\frac{100}{13}$ × $\frac{1}{100}$ × 50 = 3.84

Hence, option (a).

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