Question

A train traveling with a speed of 70 km hr leaves Patna at 8 a.m.and another train traveling at 90 km hr leaves Patna at 10 a.m.both the train are traveling in the same direction.how many kilometres from Patna Will they meet?​

Answer 1

Answer:

x=630 km

Both trains will meet at 630 km from patna

Step-by-step explanation:

Let both the trains meet at x km from Patna

Time take by first train to travel x km= x/70 hrs

and Time take by second train to travel x km =x/90

As per question scond train starts 2 hrs later from first train

So x/70=x/90+2

Taking LCM (90,70) =630

So  1/630 ( 9x=7x+1260)

Or 9x-7x=1260

2x=1260

x=630 km

Hence both trains will meet at 630 km from patna

Answer 2

Answer:

630 km

Step-by-step explanation:

hope it will help you