Question
Gas price is $ 3.5 per gallon in US
Petrol price is Rs 100 per litre in India.
Compute the price in same unit and same currency.
Answer
It is the problem of different conversion factors and currency exchange rates !!!
In US, petrol is measured in gallon.
In India, petrol is measured in litres.
1 US gallon == 3.5 litre.
1 US Dollor == 100 INR
==>> Cost of 1 gallon of petrol
==>> 3.5 litre * 100 per litre ( in Rupees )
==>> 350 rs per gallon
Cost of 1 litre of petrol
==>> 100 rs per litre / 3.5 ( in dollors )
==>> 28.571 dollors per litre