Question

36. If a train runs at 40 km/h, it reaches its destination late by 11
but if it runs at 50 km/h, it is late by 5 minutes only. Find the
to be covered by the train​

Answer 1

Step-by-step explanation:

let the distance covered be x

let the actual time be y

case 1)

time = y +11

speed = 40

distance (x)=40(y+11)________________(1)

case 2)

time = y +5

speed = 50

distance (x) =50(y+5)_________________(2)

therefore ,

equating the distance from eq 1 & 2

50(y+5)=40(y+11)

5y +25=4y +11

y = 14

putting in eq 1

x =40(14+11)

x = 40*25

x =100km