Question

after going 2/5 of my journey I find that I have covered 16 km how much of journey is still left

Answer 1

40-16=24 km is left to cover

Answer 2

2
--*x=16
5
2x=16*5
x=80/2
x=40 km
40km is total
left distance
=40-16
=24km
i hope it helps