The ratio between the speeds of two buses is 11:9. If the second bus runs 270 tans in 15 hours, then the speed of the first bus is?
A. 23 km/hr
B. 11 km/hr
C. 2 km/hr
D. 22 km/hr
Answer:D
The ratio between the speeds of two buses is 11:9. If the second bus runs 270 tans in 15 hours, then the speed of the first bus is?
A. 23 km/hr B. 11 km/hr C. 2 km/hr D. 22 km/hr