The quantity demanded of good X falls by 20% and, in response, your income goes down by 10% and, the income elasticity of demand would be:

Income Elasticity  of demand = 2

Explanation:

Income Elasticity  of demand  shows the responsiveness of the quantity demand for a good or service is to any  change consumers  income. it is calculated as

Income Elasticity  of demand = Percentage change in Quantity / Percentage change in price

=20%/ 10% =  2

Income Elasticity  of demand = 2

therefore we can say the good is a normal good sinve it has a positive income elasticity of demand which means that there will be an increase in demand as consumer income increases and a decrease in demand as consumers income decreases.

start by isolating the variable on one side by adding 43w^2 to both sides.   the equation will read:

25w^2+5=0

*subtract 5 from both sides*

25w^2=-5

*divide both sides by 25*

w^2=-1/5

*take the square root of both sides*

w=√(-1/5)

the square root of -1 is i.   the square root of 5 remains √5

the answer is i/√5.

hope this