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.

OutputTotal Cost TCAverage cost ACMarginal Cost
1188-
214?-
3?6-
420?-
5?6-
646?-

(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?

Explanation

OutputTotal Cost TCAverage cost ACMarginal Cost
1188-
214cf
3a6g
420dh
5b6i
646ej

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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