Two trains are moving in the same direction with speeds of 15 km/h – McqOptions

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1.	Two trains are moving in the same direction with speeds of 15 km/h and 21km/h respectively. What is the speed of trains in respect of each other ?
A.	26 km/h
B.	15 km/h
C.	6 km/h
D.	24 km/h
Answer» D. 24 km/h

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