A car petrol tank is full. After that, the petrol tank is filled with 30 litres of petrol and the tank is full. What is the capacity of the tank?
A 30 litres
B 36 litres
C 42 litres
D 48 litres
A car petrol tank is full. After that, the petrol tank is filled with 30 litres of petrol and the tank is full. What is the capacity of the tank?
A 30 litres
B 36 litres
C 42 litres
D 48 litres