A car travels 42km on 7 litres of petrol how far will it travel on 12litres

Answer 1

since the km/L ratio stays the same,
x/12 = 42/7
so just find x

Answer 2

42/7 = x/12
x = 12(42/7) = 72 km

(that's about 17 L/100km, awful consumption rate, I get about 8.5 on my Hyundai SUV)

Answer 3

12