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If we move from 8 to 6, the elasticity of demand is_______

Price(₦) Quantity Demanded
8 10
6 12


If we move from 8 to 6, the elasticity of demand is_______
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  • A -1.25
  • B 0.62
  • C 1.25
  • D 1
Correct Answer: Option C
Explanation:
ρd = % Δ in P[hr /] % Δ in Q


Where P = PriceQ = Quantity Demanded[br /]Therefore,

% Δ in P = 6 - 8[hr /] 8 × 100
= -25%


% Δ in Q = 12 - 10[hr /] 10 × 100
= 20%


ρd = -25/ 20 = -1.25 = 1.25

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