To calculate the cost to fill a 60 litre tank with petrol, you can multiply the cost per litre by the number of litres in the tank.
Cost per litre = N$ 13.25
Volume of the tank = 60 litres
Total cost = Cost per litre × Volume of the tank
Total cost = N$ 13.25 × 60
Calculating that:
Total cost = N$ 795.00
So, it will take N$ 795.00 to fill a 60 litre tank with petrol.