Question

Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is:
A.2 : 5
B.3 : 5
C.4 : 5
D.6 : 7

Answer 1

Answer:

Option A (2 : 5).

Step-by-step explanation:

$Let\ the\ numbers\ be\ \frac{20x}{100}\ and\ \frac{50x}{100}\ respectively. \\\\\frac{20x}{100} = \frac{x}{5} \\\\\frac{50x}{100} = \frac{x}{2} \\\\\\\frac{x}{5} \div \frac{x}{2} \\\\= \frac{x}{5} \times \frac{2}{x} \\\\= \bold{\frac{2}{5}} \\\\\\\therefore\ they're\ in\ the\ ratio\ \bold{2:5}.$

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