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1991 WAEC Economics Theory Complete the following cost schedules and answer the questions that follow.  Output Total Cost TC...

Economics
WAEC 1991

Complete the following cost schedules and answer the questions that follow. 

Output Total Cost TC Average cost AC Marginal Cost
1 18 8 -
2 14 ? -
3 ? 6 -
4 20 ? -
5 ? 6 -
6 46 ? -

(a) At what output is AC at the minimum?
(b)At what output is MC at the minimum
(c) At what output does AC start increasing?
(d) At what output does MC start to be greater than AC
(e) What is the maximum output? 
 

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Explanation
Output Total Cost TC Average cost AC Marginal Cost
1 18 8 -
2 14 c f
3 a 6 g
4 20 d h
5 b 6 i
6 46 e j

TC = AC x Output
a = output 3
TC = AC x output = 6 x 3
TC = 18

b = TC = 6 x 5
TC = 30

c = AC = \(\frac{TC}{output}\) = \(\fracfrac{14}{7}\) = 2

d = AC = \(\frac{20}{4}\) =5

e = \(\frac{48}{4}\) = 8

 f = MC at output 2
TC2 -TC = 14 - 8 = 6 

g. MC at output 3     = 18 - 14 = 4

h MC at output 4      =20 -18 = 2

i MC at output 5       = 30 - 20 = 10

j. MC at output 6      = 48 - 30 = 18

(a) output 4 units,
( b) output 4 units ,
(c) output 5 units,
(d) output 5 units
(e) maximum output is 6 units 


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WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts