Economics.Two drivers Tom and Jerry each drives up to a petrol station?

Question

Two drivers Tom and Jerry each drives up to a petrol station. Before looking at the price, each places an order. Tom says, “I’d like 10 liters of petrol.” Jerry says,” I’d like $10 of petrol.’ What is each driver’s price elasticity of demand?

Answer 1

Do you want a numeric answer.  Tom would be 0 and there is not enough information to determine Jerry's.  

If you want a qualitative answer, Tom is perfectly inelastic since his demand for gas did not change given any changes in price.  Jerry is a bit more difficult to determine since, once again, it's difficult to assign a category without knowing the change in demand given the change in price.  

Answer 2

The one who orders 10 liters does not have a limited budget of money...because 1 liter could also cost 10 pounds...and he doesn't care about it...

The other one could receive more petrol than the other one, if the price is lesser than 1 dollar pro liter and lesser petrol if the price is more than a dollar pro liter

Answer 3

Tom has relatively inelastic demand for petrol - he doesn't cares about price but rather quantity - thus he is less sensitive to price changes.

Jerry has relatively elastic demand for petrol - he cares more about price rather than quantity - thus he is more sensitive to price changes.