1991 - JAMB Economics Past Questions and Answers - page 5

41
A major obstacle to economic development is?
A
a rise in industrial output
B
low farm productivity
C
free trade
D
ineffective trade unions
correct option: b
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42
Consider the following diagram where XYZ represents the average curve of a firm. XY shows that as out put increases the average declines. However, this decline cannot continue indefinitely because
A
managerial economies
B
indivisibilities
C
the extent of the market
D
the pooling of dissimilar risks
correct option: b
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43
The firm portrayed is selling in
A
a purely competitive market
B
a market in which demand elastic at all prices
C
an imperfectly competitive markket
D
a market in which companies produce homogeneous commodities
correct option: d
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44
Demand is relatively inelastic
A
at P2 range
B
in the P2 P 4 price range
C
at P3 only
D
at any price below P2
correct option: a
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45
Consider the table which shows output (o), total cost (TC)of production and marginal cost (MC) for a firm in a competitive market. Suppose price (P) = N 12, what is the maximum profit the firm can make ?
A
N2000.00
B
1 200.00
C
1000.00
D
400.00
correct option: b
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46
The excess profit made by the firm in the short-run is represented by
A
ORTZ
B
OPVY
C
ORTW
D
ORSX
correct option: a
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47
The long-run equilibrium price and quantity for the firm are respectively
A
OP,OY
B
OR,OZ
C
OR,OX
D
OQ,OZ
correct option: c
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48
The value of total output in the economy using the value added approach is
A
N57.00
B
37.00
C
20.00
D
15.00
correct option: d
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49
In combining inputs x and y, the entrepreneur obtains the maximum output from a given money outlay when
A
\( \begin{matrix} P_ x = P _ y \ MP _ x = MP _ y \end{matrix} \)
B
\(\begin{matrix} MP _ x = P _ x \ MP _ y = P _ y \end{matrix}\)
C
P x. MP x = P y. MP y
D
P x P y = MP x. MP y
correct option: a
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50
Which of the following statements must hold if price discrimination is to be possible?
A
Elasticities in the various markets must not differ
B
The seller must recognise the possibility of resale
C
The market must not be separated but integrated
D
The markets should be seperable and there should be no resale.
correct option: c
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