| A starts from a place P to go to a place Q. At the same time, B starts from Q to P. If after meeting each other A and B took 4 h and 9 h more respectively, to reach their destinations, then ratio of their speeds is |
A) 3 : 2
B) 5 : 2
C) 9 : 4
D) 9 : 13
Correct Answer: A
Solution :
| If two persons starts at the same time from two points A and B towards each other and after crossing they take a and b hours in reaching B and A, respectively. |
| Then, \[\frac{A's\,speed}{B's\,speed}=\frac{\sqrt{b}}{\sqrt{a}}\] |
| \[=\frac{\sqrt{9}}{\sqrt{4}}=\frac{3}{2}=3:2\] |
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