Two trains leave the railway station at the same time. One train is travelling due north and the other due east. The first train is 5 km/hr faster than the second train. If after 2 hours, the trains are 50 km apart, what is the speed of each train?
Answer:
if speed of one train is x, the speed of other train is x + 5
so, the distance travelled by each train in 2 hours = 2x and 2(x + 5)
now, given (2x)2 + {2(x + 5)}2 = 502
Answer:
if speed of one train is x, the speed of other train is x + 5
so, the distance travelled by each train in 2 hours = 2x and 2(x + 5)
now, given (2x)2 + {2(x + 5)}2 = 502
So x = 15 km/hr (ignore negative value)
so, speed of the trains are 15 and 20 km/hr
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