Arithmetichard · Past Paper
If 50% of (x-y) = 30% of (x+y), what percent of x is y?
A20%
B25%
C30%
D40%
✓ Correct Answer: B — 25%
0.5x - 0.5y = 0.3x + 0.3y => 0.2x = 0.8y => y = 0.25x (25%).
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