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.
Answers
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
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----------------------------------------