Question

13. Two trains start at the same time, one from Kolkata to Madhupur and the other from
from Madhupur to Kolkata. If they arrive at Madhupur and Kolkata respectively 1 hour
and 4 hour after they meet each other, show that one travels twice as fast as they.​

Answer 1

Answer:

2ND TRAIN

Step-by-step explanation:

2 trains

K TO M

M TO K

1HOUR AND 4 HOUR

1 ST TRAIN. 1 HOUR

RETURN SAME 4 HOURS

SO THE SECOND TRAIN CAN GO TWICE

Answer 2

KOLKATA -------------------------------------------- MADHUPUR

Let,

i) 1st train go 1st half or the half before they meet each

other in x hours.

1st train go 2nd half in 1 hour.

ii) 2nd train go 1st half from other direction in x hours.

2nd train go 2nd half in 4 hours.

so, the equation is x*x = 4*1

x = √4

x = 2

So, the first train go to Madhupur in 1+2= 3 hours

and the second train reach Kolkata in 4+2= 6 hours

Hence, first train is twice faster than second train.

HOPE IT HELP.

----------------------------------------X----------------------------------------