Question

Two trains 100 and 195 m long respectively pass each other in 27 second when they run in same direction and 9 seconds when they run in opposite direction. Then what is the speed of two trains ?​

Answer 1

Answer:

your question is wrong the length of another train is wrong you write it 195 m but it cam 95m your answer is here

Step-by-step explanation:

Let the speed of first train be S1 km/hr and speed

of second trainis S2km/hr As we know,Time =

total distancerelative speed in same/opposite direction In

the same direction⇒27 sec = (100+95)( S1−

S2)×518⇒27=195×18( S1− S2)×5⇒ S1− S2=26.......................

(i)In the opposite direction,⇒9=(100+95)( S1 +

S2)×518⇒9=195×18( S1 + S2)×5⇒ S1 + S2=39+2⇒ S1

+ S2=78From equation (i) and (ii)⇒ S1− S2=26⇒ S1 +

S2=78⇒ S1=26+782⇒ S1=1042⇒ S1 = 52 km/hr and S2 =

26 km/hr