One of the two buses completes a journey of 300 km in 15/2 hours and the other a journey of 450 km in 9 hours. The ratio of their average speeds is

One of the two buses completes a journey of 300 km in 15/2 hours an

1.	One of the two buses completes a journey of 300 km in 15/2 hours and the other a journey of 450 km in 9 hours. The ratio of their average speeds is
A.	2:3
B.	3:4
C.	4:5
D.	8:9
Answer» D. 8:9

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One of the two buses completes a journey of 300 km in 15/2 hours and the other a journey of 450 km in 9 hours. The ratio of their average speeds is

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