Question

A train moving at 40 km/h will take 2 hours 15 minutes more to cover a certain distance than
when the speed is doubled. What is the distance?
B) 160 km
A) 180 km
D) 200 km
C) 220 km​

Answer 1

Step-by-step explanation:

distance = speed x time.

given,

speed = 40km/hr.

time = 2hr 15min =9/4hrs.

from the formula 40x9/4 = 90km

therefore

distance = 90km

Answer 2

Answer:

Step-by-step explanation:

let time is x hour.

2hour 15 minute = 2 *15/60 hour = 2*1/4 hour = 9/4 hour

When speed is double then

distance = 80x km    ----(1)

When speed is 4okm then

distance = 40(x+2hour 15 minute)

=40(x +9/4)

=40x+90  km ---(2)

equation 1  equal to 2  because distance is same .

40x+90 = 80x

x=90/40

x= 9/4

put x value in equation 1

distance = 80*(9/4) = 180 km ans.