A track covers a distance of 550 metres in 1 minute whereas a bus covers a distance of 33 kms in 45 minute. The ratio of their speeds is:  Choices:
A) 4:3
B) 3:5
C) 3:4
D) 50:3
E) None
Solution: Speed of track = 550 per minute.   Speed of bus = 33 kms /45 = 33000/45 = 733.33 m/minute   Ratio of their speeds = 550/733.33 = 3:4.   Answer: Option 3:4
<result>C</result>
A track covers a distance of 550 metres in 1 minute whereas a bus covers a distance of 33 kms in 45 minute. The ratio of their speeds is: