One of the two buses completes a journey of 300 km in 7 hours 30 minutes 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 7 hours 30 mi

1.	One of the two buses completes a journey of 300 km in 7 hours 30 minutes 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 7 hours 30 minutes and the other a journey of 450 km in 9 hours. The ratio of their average speeds is?

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