Answer:
$-120
Explanation:
Own Price elasticity of demand measures the responsiveness of quantity demanded to changes in price of the good.
Price elasticity of demand = percentage change in quantity demanded / percentage change in price
-3 = percentage change in quantity demanded / 2%
percentage change in quantity demanded = --3 x 2% = -6%
The quantity demanded of good X would fall by 6%
Revenue would change by -0.06 x $50,000 = -$3000
Cross price elasticity of demand measures the responsiveness of quantity demanded of good Y to changes in price of good X.
1.6 = percentage change in quantity demanded of good Y / 2%
percentage change in quantity demanded of good Y = 1.6 x 2% = 3.2%
The quantity demanded of good Y would increase by 3.2%
Revenue would change by 0.032 x $90,000 = $2880
Total change = -$3000 + $2880 =-$120