Question

. A vehicle uses 2 litres of petrol in 1 hour . How many litres of petrol will be required to run the vehicle for 3 hours ?

Answer 1

for 1 hour the vehicle requires 2l
so for 3 hour it will require 2×3=6
it will require 6l of petrol.

Answer 2

Using direct and inverse variation,
Ihr. 3hr
2litres. ?

x/y=k
1*2=3x
x=6 litres