Answer :
25% would be 1/4 of the whole journey. If 5000km is 1/4 then, we need to multiply it by 4.
[tex]5.000km*4=20.000km[/tex]
[tex]5.000km*4=20.000km[/tex]
20000km is the whole journey since 25% covers 5000 km
therefore 5000*4=20000km
therefore 5000*4=20000km