Answer:
Ei=3.33
Normal good
Explanation:
SOLUTION
Using the midpoint method to calculate her income elasticity
Ei=(Q2-Q1) /(I2-I1)*(I2+I1)/(Q2+Q1)
Q2=4 I2=109,500
Q1=3 I1=100,500
Ei=(4-3)/(109,500 - 100,500) *(109,500+100,500)/(4+3)
Ei=1/9000*210,000/7
Ei=3.33333333
Approximate to two decimal places
Ei=3.33