Expression : 15% of x is three times of 10% of y
=> $$\frac{15}{100} \times x=3 \times \frac{10}{100} \times y$$
=> $$15x=30y$$
=> $$\frac{x}{y}=\frac{30}{15}=\frac{2}{1}$$
$$\therefore$$ Required ratio = 2Â : 1
=> Ans - (B)
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