Home
Class 14
MATHS
P and Q are 27 km away. Two trains with ...

P and Q are 27 km away. Two trains with speed of 24 km/hr and 18 km/ hr respectively start simultaneously from P and Q and travel in the same direction. They meet at a point R beyond Q. Find distance QR

A

126 km

B

81 km

C

48 km

D

36 km

Text Solution

Verified by Experts

The correct Answer is:
B
सापेक्ष गति `=24-18= 6 km//hr`
तेज ट्रेन द्वारा धीमे ट्रेन को ओवरटेक करने में लगा समय
`=(27)/(6) =4(1)/(2) hr`
= Q और R के बिच की दुरी `=18xx4(1)/(2)=81 km`.
Promotional Banner

Similar Questions

Explore conceptually related problems

Two cities A and B are at a distance of 60 km from each other . Two persons P and Q start from First city at a speed of 10km/hr and 5km/hr respectively . P reached the second city B and returns back and meets Q at Y . Find the distance between A and Y .

A train passes two persons walking in the same directions at a speed 5 km/hr and 7 km/hr respectively in 10 sec and 11 sec respectively. Find the speed of the train.

Two train are of lengths 150 metre and 250 metre respectively. Trains are running at the speed of 45 km/hr and 65 km/hr respectively in same direction What will be the time taken by second train to cross the first train ?