Question

15. A train completes a journey in 8 hrs. It covers
half the distance at 40 km/h and the rest at 60
km/h. The length of the journey is
(a) 350 km
(b) 420 km
(c) 384 km
(d) None of these
at​

Answer 1

Answer:

Let the total journey be x km.

2

x

×

40

1

+

2

x

×

60

1

=8

Therefore,

8

x

+

120

x

=8

3x + 2x = 1920

That is, 5x = 1920, x= 384 km.

Hence, The length of the journey is 384 km.