1.

Two stations L and M are 180 km apart from each other. A train leaves from L to M and simultaneously another train leaves from M to L. Both trains meet after 9 hours. If the speed of the first train is 10 km/hr more than the second train, then what is the speed (in km/hr) of the slower train?_x005F_x000D_

A. 9
B. 5
C. 12
D. 15
Answer» C. 12


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