How Many Kilometers Will 1kg Traval On Converted CNG Vehicles?

First off, CNG is not measured by kg. Here are some technical information so you can understand more. 

CNG:

@230/L

15scm = N3,450 Naira = average of 160km travel.

LPG/cooking Gas: 

@ N1,000/kg

15kg = N15,000 = avg of 168KM travel.

Petrol:

@600/L or so...

21litres = #12,957 = 168Km travel

I think this will also help Nigerians in the cost savings  For the same distance covered (i.e 168km).

When compare prices of Petrol - LPG - CNG:

N12,957 : N15,000 : N3,450 respectively.