the journeys and petrol usage of a number of cars have been recorded.

Question

 Car            length of journey (km)         petrol usage (litres)
Monteudeo         120                                   10
Stella                 150                                   16
Riuiera               200                                   25
Roamer              185                                   21
Carousel             230                                  16


the petrol usage of a number of cars have been measured. Each car started with a filled tank,then made a journey(all journeys were made through similiar roads) After the journey the tanks of each car were filled to the top, and the amount of petrol needed to fill the tanks were recorded.
work out a system to put the cars in order of their deficiency (km/litre) from lowest to highest  

Answer 1

In order to rank the cars, it is necessary to divide the distance by the number of Liters of gasoline.

 

 Car            length of journey (km)         petrol usage (litres)  km/L
Monteudeo         120                                   10                     12.0
Stella                 150                                   16                      9.4
Riuiera               200                                   25                      8.0
Roamer              185                                   21                      8.8
Carousel             230                                  16                     14.4

 

So, the franking is 1. Carousel 2. Monteudeo 3. Stella  4. Roamer 5 Riviera