• # question_answer The ratio between two numbers is 3 : 5. If each number is increased by 4, the ratio becomes 2 : 3 the number are A)  9 and 15 B)  6 and 10 C)  12 and 20 D)  None of the above

Let the numbers be 3x and 5x. $\Rightarrow$ $\frac{3x+4}{5x+4}=\frac{2}{3}$ $\Rightarrow$ $x=4$ So, the numbers are 12 and 20.