The income elasticity in this case is 1.
Explanation:
In Economics, the income elasticity of demand gauges the responsiveness of the amount requested for a decent or administration to an adjustment in income. It is determined as the proportion of the rate change in amount requested to the rate change in pay.
Income Elasticity of Demand (YED) is characterized as the responsiveness of interest when a purchaser's salary changes. It is characterized as the proportion of the adjustment in amount requested over the adjustment in salary.
