bài tập về kinh tế vĩ mô 2 có đáp án

... demand at P=9 is = ( 2) = = −0. 82 Q ΔP 22 22 Elasticity of demand at P= 12 is P ΔQ 12 24 = ( 2) = = −1.5 Q ΔP 16 16 c What is the price elasticity of supply at $9? At $ 12? Elasticity of supply at ... equilibrium Quantity demanded and supplied are QD = 26 26.4 -21 2.6(3.5)=18 82. 3, and QS = 1944 + 20 7(3.5) = 26 68.5 Excess supply is therefore 26 68.5-18 82. 3=786 .2 million bushels The government must purchase ... ⎞ , or g = 0 .25 ⎝ 20 ⎠ The values for d and b may be found with equations 2. 5a and 2. 5b in Section 2. 6 We know that ES = 0 .2, P* = 2, and Q* = 20 Therefore, 0 .2 = d ⎛ ⎞ , or d = ⎝ 20 ⎠ Also, ED...

Ngày tải lên: 23/12/2013, 14:15

... and the Consumer Price Index from 1980 to 20 01 ˇ 1980 1985 1990 1995 20 00 20 01 CPI 100 130.58 158. 62 184.95 20 8.98 21 4.93 $1.88 $2. 12 $1.99 $1.61 $2. 52 $3.30 Retail Price of butter (salted, grade ... $2. 98 1985 82. 3 1985 $2. 58 1990 100 1990 $1.99 1995 116.6 1995 $1.38 20 00 131.8 20 00 $1.91 20 01 135.6 20 01 $2. 43 d What is the percentage change in the real price (1990 dollars) from 1980 to 20 01? ... 1990 1995 20 00 20 01 $1.88 $1. 62 $1 .25 $0.87 $1 .21 $1.54 Since 1980 the real price of butter has decreased b What is the percentage change in the real price (1980 dollars) from 1980 to 20 01? Percentage...

Ngày tải lên: 23/12/2013, 14:15

... curve are (5,10), (10,5), (25 ,2) , and (2, 25) Erin receives a utility of 2* 10*10*5*5=500 from the bundle (10,5) Her indifference curve is 2 represented by the equation 500= 2F C , or 50=FC This is ... utility of 120 0, so her indifference curve is given by 26 Chapter 3: Consumer Behavior c the equation 10FC= 120 0, or FC= 120 Some bundles on this indifference curve are ( 12, 10), (10, 12) , (3,40), ... (3,40), and (40,3) For Erin, this bundle gives her a utility 2 of 28 80, so her indifference curve is given by the equation 28 80= 2F C , or FC= 120 This is the same indifference curve as Bridget Do you...

Ngày tải lên: 23/12/2013, 14:15

... 1 .2 line, Line spacing: 1.5 lines $10 $2 11 45 $20 0 Formatted: Space Before: 1 .2 line, After: 1 .2 line, Line spacing: 1.5 lines $10 $2 15 50 $25 0 Formatted: Space Before: 1 .2 line, After: 1 .2 ... x1 x2 P1 P2 I Formatted: Space Before: 1 .2 line, After: 1 .2 line, Line spacing: 1.5 lines Week 12 24 48 Formatted: Space Before: 1 .2 line, After: 1 .2 line, Line spacing: 1.5 lines Week 16 32 1 ... and TR2 = P2Q2 be revenue after the price change For computer chips: ΔTRcc = P2Q2 - P1Q1 ΔTRcc = (1.1P1 )(0.8Q1 ) - P1Q1 = -0.12P1Q1, or a 12 percent decline For disk drives: ΔTRdd = P2Q2 - P1Q1...

Ngày tải lên: 23/12/2013, 14:15

... weighted by their probabilities: 2 = (0.5)(0 - 1. 025 )2 + (0 .25 )(1 - 1. 025 )2 + (0 .2) (2 - 1. 025 )2 + (0.05)(7.5 - 1. 025 )2, or 2 = $2. 8 12 b Richard’s nickname is “No-risk Rick.” He is an extremely risk-averse ... (0.1) (20 0) = $25 0 The variance on investment A is 2 = (0.1)(300 - 25 0 )2 + (0.8) (25 0 - 25 0 )2 + (0.1) (20 0 - 25 0 )2 = $500 The expected value of the return on investment B is EV = (0.3)(300) + (0.4) (25 0) ... investment B is EV = (0.3)(300) + (0.4) (25 0) + (0.3) (20 0) = $25 0 The variance on investment B is 2 = (0.3)(300 - 25 0 )2 + (0.4) (25 0 - 25 0 )2 + (0.3) (20 0 - 25 0 )2 = $1,500 b Jill has the utility function...

Ngày tải lên: 23/12/2013, 14:15

... 1 .2 line, After: 1 .2 line, Line spacing: 1.5 lines 0 _ Formatted Table _ Formatted: Space Before: 1 .2 line, After: 1 .2 line, Line spacing: 1.5 lines 22 5 22 5 22 5 600 375 300 900 300 300 1140 24 0 ... (100)(40.8 )(500 .2 ) = 6 62. 89 ⇒ MPL = 2. 67 L = 51 ⇒ q = (100)(4 )(51 ) = 665. 52 ⇒ MPL = 2. 63 0.8 0 .2 L = 52 ⇒ q = (100)(4 )( 52 ) = 668.11 ⇒ MPL = 2. 59 0.8 0 .2 Formatted: Font: Times New Roman, 12 pt Formatted: ... 900 300 300 1140 24 0 28 5 1365 22 5 27 3 Formatted: Space Before: 1 .2 line, After: 1 .2 line, Line spacing: 1.5 lines 1350 -15 22 5 Formatted: Space Before: 1 .2 line, After: 1 .2 line, Line spacing:...

Ngày tải lên: 23/12/2013, 14:15

... AC = b + cQ + dQ = b + c⎛ ⎝ 92 −c ⎞ 2d ⎛ ⎠ + d⎝ −c ⎞ 2d ⎠ , or Chapter 7: The Costs of Production AC = b − implying b > c2 2d + c2 =b− 4d 2c 4d + c2 4d = b− c2 4d > c2 Because c >0 and d > 0, ... average cost per engine? q To produce q = 25 0 engines we need labor teams L = or L=10 Average costs 25 are given by AC(q = 25 0) = c 50,000 + 22 00 (25 0) = 24 00 25 0 You are asked to make recommendations ... Production TC(q) = rK +wL +20 00q = (10, 000)(5) + (5, 000)( q ) + 2, 000 q 25 TC(q) = 50, 000 +22 00q The average cost function is then given by: AC(q) = TC(q) 50,000 + 22 00q = q q and the marginal...

Ngày tải lên: 23/12/2013, 14:15

... = 150 TC FC = 20 0 π FC = 20 0 50 28 150 20 0 22 8 -150 -140 -108 20 0 25 0 27 8 -20 0 -190 -158 -18 28 70 110 20 14 18 20 24 8 26 2 28 0 300 -68 -22 20 60 29 8 3 12 330 350 -118 - 72 -30 10 27 2 310 355 410 ... 178 50 28 50 78 100 100 100 50.0 39.0 198 21 2 23 0 25 0 20 14 18 20 98 1 12 130 150 100 100 100 100 32. 7 28 .0 26 .0 25 .0 10 27 2 310 355 410 22 38 45 55 1 72 210 25 5 310 100 100 100 100 24 .6 26 .3 28 .3 ... minimum average cost, set marginal cost equal to average cost and solve for q: 2q 722 q = + 20 0 q 20 0 722 q = q 20 0 q = 722 (20 0) q = 380 AC(q = 380) = 3.8 Therefore, the firm will not sell for any...

Ngày tải lên: 23/12/2013, 14:15

... to area a Numerically: a = (21 .5-19 .2) (14.6)+(17.4-14.6) (21 .5-19 .2) (.5)=36.8 b = (17.4-14.6) (21 .5-19 .2) (.5)=3 .22 c = (21 .5-19 .2) (20 .4-17.4)=6.9 d = (21 .5-19 .2) (21 .1 -20 .5)(.5)=0.69 These numbers ... P: (26 .53- .28 5P)-(-8.70+1 .21 4P)=6.5 35 .23 -1.499P=6.5 P=19 .2 cents per pound 128 Chapter 9: The Analysis of Competitive Markets At a price of 19 .2 cents per pound QS = -8.70 + (1 .21 4)(19 .2) = ... A in Figure 9.6.d, which is ( 12 - 9)(6) + (0.5)(8 - 6)( 12 - 9) = $21 million P S 20 15 12 A B D C D Q 10 16 22 40 Figure 9.6.d Formatted: Bullets and Numbering 125 Chapter 9: The Analysis of...

Ngày tải lên: 23/12/2013, 14:15

... marginal cost: MC=4Q=90-4Q=MR Q=11 .25 For a quantity of 11 .25 , the firm will charge a price P=90 -2* 11 .25 =$67.50 level of profit is $67.50*11 .25 -100 -2* 11 .25 *11 .25 =$406 .25 b The Find the price, quantity, ... $38 (38 = 55 - 2( 8.5)), i.e., (0.5)(55 - 38)(8.5) = $ 72. 25 plus the savings on each doorstep, i.e., (38 - 12) (8.5) = $22 1 Therefore, consumer surplus is $29 3 .25 Total surplus is $26 5.50, and deadweight ... Ed = -2. 0, so 1/Ed = -1 /2; price should then be set so that: P = MC ⎛ 1⎞ ⎝ 2 = 2MC Therefore, if MC rises by 25 percent, then price will also rise by 25 percent When MC = $20 , P = $40 25 percent...

Ngày tải lên: 23/12/2013, 14:15

... revenue for the two markets are: P1 = 15 - Q1 MR1 = 15 - 2Q1 P2 = 25 - 2Q2 MR2 = 25 - 4Q2 The monopolist’s total cost is C = + 3(Q1 + Q2 ) What are price, output, profits, marginal revenues, and ... P1, r2 < P2, r1 + r2 < PB 198 In region Chapter 11: Pricing with Market Power II sports r1 > P1, r2 < PB - P1 channel III movie r2 > P2, r1 < PB - P2 channel IV both channels r1 > PB - P2, r2 > ... = (0.5)(Q2)(10 - P), where Q2 = − ⎛1⎞ P , or ⎝4⎠ ⎞ 26 P P ⎛ T = (0.5 )⎝ 4.0 − P ⎠ (10 − P ) = 20 − + 8 The entry fees generated by all of the 2, 000 players would be ⎛ 26 P P ⎞ (2, 000) 20 − + ⎟...

Ngày tải lên: 20/01/2014, 20:20

... 37 52 73 100 28 18.5 17.3 18 .25 20 15 21 27 Firm Firm Units TC AC MC TC AC MC 15 20 19 19 26 26 31 15.5 12 44 22 18 51 17 20 74 24 .67 30 79 19.75 28 116 29 42 115 23 36 170 34 54 21 5 ... results in q1 =25 .7 and q2 =21 .4 The equilibrium price and profits will then be: P = 20 0 - 2( q1 + q2) = 20 0 - 2( 25.7 + 21 .4) = $158.57 π1 = (158.57) (25 .7) - (30) (25 .7) – 1.5 *25 .7 = $23 13.51 2 = (158.57) ... reaction function to find P2: P2 = 20 + 30 = $25 At these prices, Q1 = 20 - 30 + 25 = 15 and Q2 = 20 + 30 - 25 = 25 Profits are π1 = (30)(15) = $450 and 2 = (25 ) (25 ) = $ 625 If Firm must set its...

Ngày tải lên: 20/01/2014, 20:20

... future cash flows Thus, the stock price will not change after the announcement of increased earnings 22 Stock prices should immediately and fully rise to reflect the announcement Thus, one cannot expect...

Ngày tải lên: 20/01/2014, 20:20

... greater than in part a L MPL MRPL 0 - - 25 25 50 q 23 5 Chapter 14: Markets for Factor Inputs 43.75 18.75 37.5 58.75 15 30 71 .25 12. 5 25 81 .25 10 20 87.5 6 .25 12. 5 Assume that workers whose incomes ... 0 - - 20 20 40 35 15 30 47 12 24 57 10 20 65 16 70 10 23 3 Chapter 14: Markets for Factor Inputs b Suppose that the price of the product remains at $2 but that the wage rate increases to $21 Find ... part a q L MPL MRPL 0 - - 20 20 60 35 15 45 23 4 Chapter 14: Markets for Factor Inputs 47 12 36 57 10 30 65 24 70 d 15 Suppose that the price of the product remains at $2 and the wage remains at...

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