Month QY 9 PX Ox N Jan 100 20 50 225 Feb 10 60 Mar 10 70 15 90 25 275 50 25 290 Apr 12 15 100 15 25 15 120 25 320 May Use the data from February and March. In the above table, the cross price elasticity of demand for good Z . Hint: You'll have to see what with good Y when PY falls from $18 (old price) to $15 (new price) is the quantities of Z are at these two prices of Y. Do the percent changes, and find the cross-price elasticity. Remember that cross-price elasticity can be positive or negative! The cross-price elasticity is