Answer:
lead to a fall in quantity demanded by 10%
Step-by-step explanation:
The cross price elasticity of demand measures the effect of the percentage in price of one good on the quantity demanded of another good.
Cross price elasticity = percentage change in quantity demanded of good A / percentage change in price of good B
2 = percentage change in quantity demanded of good A / 5%
percentage change in quantity demanded of good A = 10%
Because demand is elastic, the quantity demanded would fall by 10%
Elastic demand means that quantity demanded is sensitive to price changes. A small change in price would lead to a greater change in quantity demanded