Cal decided to lower his price once again to $2.729 per gallon. Once again, volume sold increases

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Question:

Cal decided to lower his price once again to $2.729 per gallon. Once again, volume sold increases and settles at 4,800 gallons per day. He is worried that any further price cut will cause the discount station across the street to also lower its price.

What is the price elasticity of demand?

Can the demand be characterized as price elastic, price inelastic, or neither?

By how much did revenues increase or decrease as a result of the change in price?

By how much did profits increase or decline?