A truck covers a distance of 550 metres in 1 minute whereas a train covers a distance of 33 kms in 45 minutes. What is the ratio of their speed? Options.
A) 3 : 7	B) 4 : 7	C) 1 : 4	D) 3 : 4	E) 2 : 5
Explanation:   Speed of the truck = 3 : 4istance/Time=550/1= 
<gadget id="calculator">550/1</gadget>
<output>550</output>
550 meters/minute   Speed of the train= 3 : 4istance/Time=33/45 km/minute = 33000/45 meters/minut   Speed of the truck/Speed of the train = 550/(33000/45) = (550 × 45)/33000 = (55 × 45)/3300   = (11 × 45)/660 = (11×9)/132 = 9/12 = 34   Hence, Speed of the truck : Speed of the train = 3 : 4   Answer: Option 3 : 4
<result>D</result>
A truck covers a distance of 550 metres in 1 minute whereas a train covers a distance of 33 kms in 45 minutes. What is the ratio of their speed?