One of the two buses completes a journey of 300 km in 15/2 hours, and the other completes a journey of 450 km in 10 hours. Find the ratio of their average speeds.
A
4 : 5
B
9 : 8
C
8 : 9
D
5 : 4
Correct Option:
C
Explanation
First bus: 300 ÷ 7.5 = 40 km/h. Second bus: 450 ÷ 10 = 45 km/h. The ratio is 40:45 = 8:9.
