Search SchoolNGR

Wednesday, 08 April 2026
Register . Login

(a) Define price elasticity. (b) If at N 8.00 per tuber, twenty tubers were demanded ...

(a) Define price elasticity.
(b) If at N 8.00 per tuber, twenty tubers were demanded and when the price fell to N 6. 00 per tuber, thirty tubers were demanded, what is the elasticity of the demand?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
    Correct Answer: Option n
    Explanation:
    (a) Price elasticity is the degree of responsiveness of demand or supply to a small change in price. The formula is: %D od or Qs
    % D Price
    price Quantity demanded
    N8N6 20 tubers30 tubers



    Formula = % change in quantity demanded
    % change in price
    % change in quantity demanded (30 -20) =10
    =\(\frac{10}{20} x 100 =50%
    %change in price (8 - 6 )= 2
    = \(\frac{2}{8} \times \frac{100}{1}\) = 25%
    Elasticity of demand = \(\frac{50} {25}\) = 2
    Demand is elastic because two is greater than one.

    Share question on: