Question

A car completed a certain journey in 8 hours. It covers half the distance at 40 km per hour and the rest at 60 km per hour. The length of the journey is

Answer 1

Answer:

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 length of the journey is 480 km