Answer:
150 kilometres
Step-by-step explanation:
Imagine it as a ratio 6 : 100
If they have given you the first side which is 9 you need to figure out the other side (9 : ?)
To do this you simply need to figure out how you get from 6 to 9 which is times by 1.5
Then to find the other side you do the same as they are proportional to each other
So 100 times by 1.5 which is 150
This gives you the answer that you can travel 150 kilometres with 9 litres of fuel
