When 20 per cent of a number is added to another number the second number increases to its 140 per cent. What is the ratio between the first and the second number?
Options.
A) 2 : 1  B) 4 : 3  C) 3 : 2  D) Data inadequate  E) None of these
Let the first and the second numbers be x and y respect then   y + 20% of x = 140% of y   or, y + 0.2x = 1.4y   or, 0.2x = 0.4y   ∴ x : y = 0.4 : 0.2 = 2 : 1   2 : 1nswer 2 : 1
<result>A</result>
When 20 per cent of a number is added to another number the second number increases to its 140 per cent. What is the ratio between the first and the second number?