Arithmeticmedium · Past Paper
If $x/y = 3/4$, then $(7x+3y) : (7x-3y)$ is:
A11:3
B3:11
C1:2
D5:2
✓ Correct Answer: A — 11:3
x=3, y=4 => (21+12)/(21-12) = 33/9 = 11/3.
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