1. (3 pts) As a demand analyst working for a supermarket chain,you have obtained the following information from your stores'price scanner system: as the price of hamburger decreases from$2.75/lb. to

$2.25/lb., the quantity demanded of hamburger in your areas changes from 4,000 to 6,000 pounds per week. a. As the price of hamburger decreases from $2.75 to $2.25 perpound, the quantity sold of ketchup increases from 1,375 bottlesper week to 1,725 bottles per week. What is the cross priceelasticity of demand of ketchup with respect to the price ofhamburger? b. What does the sign of the cross-price elasticity of ketchupwith respect to hamburger tell you about the relationshipbetween the two goods?