Question

A
man  completes a journey in 8 hours. He covers half the distance at 40 km/
hr and the rest 60 km/ hr. The length of the journey is ?

Answer 1

let 2x be the distance the man travels. therefore 
$x/40+x/60=8$⇒$5x/120=8$⇒$x/24=8$⇒$x=24*8=192$.
but the distance he travelled was 2x. hence he trvalled 2*192=384 kms.

Answer 2

The correct answer is 384 km because the length of the journey is 384 km.

Given:

• A man completes a journey in 8 hours
• Half the distance covered by him = 40 km/hr
• rest distance in 60 km/hr

To Find:

The length of the journey

Solution:

Let's consider 2x as the length of the journey.

$\frac{x}{40}$ + $\frac{x}{60}$ = 8

$\frac{3x + 2x}{120}$ = 8

3x + 2x = 8 x 120

5x = 960

x = $\frac{960}{5}$

x = 192

the length of the journey is 2x

= 192 x 2

= 384

Hence,  the correct answer is 384 km.

#SPJ2