A system consists of two types of gas molecules A and B having same number density \( 2 \times 10^{25} \, /\text{m}^{3} \). The diameter of A and B are \( \displaystyle 10\overset{\circ}{A}\) and \( \displaystyle 5\overset{\circ}{A} \) respectively. They suffer collision at room temperature. The ratio of average distance covered by the molecule A to that of B between two successive collision is ______ \( \times 10^{-2} \).
