Question

A plane flies 405 km on 90 litres of petrol how much fuel is needed to fly 540km

Answer 1

Plane fly 450km = 60 litre
Plane fly 540km=540×90/405
= 100 litre

Answer 2

"Fuel needed for 540 km is 120 litres.

Given:

405 km on 90 litres

To find:

Fuel needed for 540 km

Solution:

Now let us consider the point that is given in the question,

90 = 405km

x = 540

we can form an equation in order to find x,

Using the found x, we can proceed for finding the main objective

90 litres= 405 km

50 litres $= \frac {(50\times 405)}{90}=255 km$

1 litre = 4.5 km

1 km $= \frac {1}{4.5} litre$

540 km $= \frac {540}{4.5} litre$

540 km =120 litres

Hence 120 litres is needed to run 540 km."