Question

2. If 10% of x is the same as 20% of y, then xy is equal to:
a 1:2
b 2:1
c.5:1
d. 10:1​

Answer 1

Step-by-step explanation:

$10 percent \: of \: x \: = \frac{x}{10} \\ 20percent \: of \: y \: = \frac{y}{5} \\ \frac{x}{10} = \frac{y}{5} \\ x = 2y \\ - - - - - - - - \\ x \ratio y \\ - > \frac{x}{10} \ratio \: \frac{y}{5} \\ - > \frac{x}{10} \times \frac{5}{y} \\ - > \frac{x}{2y} \\ - > \frac{2y}{2y} \: \: \: \: \: \: \: \: \: \: (x = 2y) \\ - > 1 \ratio \: 1$

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