An algebra problem by Tammu Triveni
Algebra
Level
2
Two trains 280 m. and 320 m. are running in opposite direction. The speed of the two trains are 60 km/h. and 30 km/h. In what time the two trains cross each other?
The answer is 24.
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1 solution
The total speed is 60+30=90km/hr.
Now convert this into m/sec.
To do this multiply by 5/18
Therefore,90 x 5/18 = 25 m/sec.
Total length of the two trains = 280+320 =600m.
Now divide 600 by 25.
On dividing you will get the answer as 24.