B. Suppose the own price elasticity of demand for good X is -2, its income elasticity is 3, its advertising elasticity is 4, and the cross-price elasticity of demand between it and good Y is -6.

Determine how much the consumption of this good will change if:

i. The price of good X increases by 5 percent.

ii. The price of good Y increases by 10 percent.

iii. Advertising decreases by 2 percent.

iv. Income falls by 3 percent.