Two buses start at the same time, one from P to Q and the other from Q to P. If both buses reach after 4 hours and 16 hours at Q and P respectively after they cross each other, what would be the ratio of speeds of the bus starting from P and that of the one starting from point Q?
Choose the correct choice from the following answers:
A) 2 : 1	B) 1 : 2	C) 2 : 2	D) 1 : 4	E) 5 : 2
Hint:   SP / SQ = √tQ / √tP   SP and SQ are speeds of two the buses at points P and Q respectively.   tP = 18 hrs and tQ = 4 hrs   SP / SQ = √16 / √4   Therefore, ratio of speeds	Sp/ SQ = 4/2= 
<gadget id="calculator">4/2</gadget>
<output>2</output>
2/1   One bus travels at a speed twice of the other bus.   2 : 1NSWER IS 2 : 1
<result>A</result>
Two buses start at the same time, one from P to Q and the other from Q to P. If both buses reach after 4 hours and 16 hours at Q and P respectively after they cross each other, what would be the ratio of speeds of the bus starting from P and that of the one starting from point Q?