When 30 per cent of a number is added to another number the second number increases by its 20 per cent. What is the ratio between the first and the second number?  Choices
A) 3 : 2
B) 2 : 3
C) 2 : 5
D) Data inadequate
E) None of these
30% of I + II = II × 120⁄100   or, 3⁄10I = 2⁄10II ⇒ I : II = 2 : 3.   Answer 2 : 3
<result>B</result>
When 30 per cent of a number is added to another number the second number increases by its 20 per cent. What is the ratio between the first and the second number?