Suppose the price of peanut butter falls from $6 to $5 per jar. Instructions: Round your answer to three decimal places and include a negative sign if appropriate. a. The quantity of jelly purchased rises from 12 million jars to 14 million jars. The cross-price elasticity of demand between peanut butter and jelly using the mid-point method is _______ Part 2. The goods are either substitutes or complements pick one b. The quantity of jelly purchased falls from 14 million jars to 12 million jars. The cross-price elasticity of demand between peanut butter and jelly using the mid-point method is ________ Part 2. The goods are either substitutes or complements pick one