Question 1022961
1 litre of fuel to travel 12km
{{{(1 l)/(12 km)}}}
Multiply numerator and denominator by 1/12
{{{((1/12)*l)/(1 km)}}}= (1/12) litres per km
The fuel required for 420 km = (1/12)*420 litres
= 420/12 = 35 litres