Data on price of y, quantity demand for x when income is 100 and quantity demand for x when income is 200 are given in the following table. The price of x is fixed at $7.

Py. Qdx. Qdx (income

(income $100). $200)

0. 114.5. 46.5

1. 115. 47.8

2. 115.5. 49.1

3. 116. 50.4

4. 116.5. 51.7

5. 117. 53

6. 117.5. 54.3

7. 118. 55.6

8. 118.5. 56.9

9. 119. 58.2

10. 119.5. 59.5

A calculate income elasticity of demand for x using the midpoint method when income increases from $100 to $200 and when price of Y is fixed at $9. Explain your answer

B Calculate cross price elasticity of demand for x when price of Y decreases from $9 to $8 and when income is $100. Explain your answer