Question

Eliana drove her car 81 km and used 9 liters of fuel.she wants to know how many kilometers (x) she can drive on 22 liters of fuel. She assumes her car will continue consuming fuel at the same rate

Answer 1

9 liters of fuel covered   81 km

1 liter of fuel would have covered  81/9  km  = 9 km

22 liters of fuel would then cover   =   22 * 9  =  198 km.

Answer 2

Answer

Find out the how many kilometers (x) she can drive on 22 liters of fuel .

To prove

As given

Eliana drove her car 81 km and used 9 liters of fuel .

She assumes her car will continue consuming fuel at the same rate .

9 litres = 81 km

$1 litre = \frac{81}{9} km$

1litre = 9 km

Thus in 1 litre of fuel Eliana drove her car 9 km .

for the 22 litre of fuel .

22 litre =  22 × 9  

            = 198 km

Therefore 198 km Eliana can drive on 22 liters of fuel.