Question

5. Prayagraj express leaves a station at a certain time and at a fixed speed. After 3 hours an express train leaves the same station and moves in same direction at uniform speed of 60 kmph. This train catches up the prayagraj express in 9 hours. Find the speed of prayagraj express.

Answer 1

Answer:

let the speed of goods train be x

dist covered by goods train in 10hrs (4+6)= dist covered by other train 4 hrs

10x=4*90

x=36kmph

Answer 2

Answer 40

Explanation:

distance travelled by praygraj in 9hrs= distance travelled by express in 6hrs

x.9 = 6 . 60

9x=360

x=40