Question

Parth misses train by 1 hour if he travels at speed of 4km/h. If he increases speed to 5 km/h, he still misses the train by 24 minutes. At what speed should he travel so that he reaches station on​

Answer 1

Answer:

6 kmph

Explanation:

In both the cases, distance ‘d’ travelled is same. When he travels at 5 kmph, he reached the station 36 min earlier than when he travels at 4 kmph.

Time = Distance/Speed

⇒ d/5 + 36/60 = d/4

⇒ d/4 – d/5 = 36/60

⇒ d/20 = 36/60

⇒ d = 12 km.

When he travels at 4 kmph, he reaches after 3 hours and still is late by 1 hour. Therefore, he has to reach station in 2 hours.

∴ Required speed = 12/2 = 6 kmph