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Practice Assignment № 3

VARIANT № _____

TASK

1. Using your variant individual data from the schedule and the following demand function: QDa = 60 - 2Pa +4Pb +0,5I calculate price demand elasticity coefficient, income elasticity of demand and cross-elasticity coefficient. Make a conclusion on every case result. (NB! You should remember about ceteris paribus condition under every calculating: one factor influence can be determined just under all else equal).

Variant

Pa1

Pa2

Pb1

Pb2

I1

I2

1

1

10

2

5

1000

2600

2

2

20

1

4

1300

2650

3

3

9

3

2

1200

2700

4

4

18

4

7

1100

3000

5

5

8

7

14

1050

1000

6

6

16

8

11

2050

1300

7

7

17

6

9

2300

1200

8

8

14

5

9

2500

1100

9

9

6

23

15

2600

1050

10

10

12

27

19

2650

2050

11

11

5

9

13

2700

2300

12

12

10

17

25

3000

2500

13

13

4

13

10

1000

2600

14

14

8

25

20

1300

2650

15

15

3

18

24

1200

1050

16

16

6

14

16

1100

2050

17

17

11

20

23

1050

2300

18

18

13

28

15

2050

2500

19

19

21

19

12

2300

2600

20

20

24

21

13

2500

2650

21

21

25

4

5

2600

1050

22

22

26

6

8

2650

2050

23

23

15

8

3

2700

2300

24

24

17

22

21

3000

2500

25

25

28

8

4

2150

3500

2. The level of personal income (In0) in basic period is $1000. The number of consumers (N0) is 1200 persons. Total demand for the good (QD0total) is 24000 units. Using information about these values in current period (presented in the following schedule by variants) calculate income elasticity coefficient and make a conclusion about good’s characteristics. What changes in individuals’ quantity demanded you can expect if you know that the level of personal income will change by R%?

Variant

In1, $

N1, persons

QD1total, units

R, %

1

1500

1000

25000

-5

2

1400

900

26000

7

3

1300

800

24500

-9

4

1200

700

20000

20

5

1100

600

21000

-10

6

950

500

22000

15

7

900

650

23000

8

8

850

700

23500

-9

9

1900

750

28000

12

10

2000

800

27000

-14

11

2100

850

23500

15

12

2050

900

20000

-5

13

1550

950

21000

24

14

1450

1000

22500

14

15

1350

1050

23000

-16

16

1250

1100

22200

18

17

1150

1150

29000

-19

18

955

1250

28500

21

19

980

1300

27000

-15

20

1850

1340

26500

10

21

1090

1360

26000

9

22

1020

1370

28000

-6

23

1490

1380

27000

4

24

2410

1500

23500

9

25

890

1050

20000

-11

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