1.

The Price Elasticity of a Commodity is (-) 1.5. When its price falls by Rs 1 per unit, its quantity demanded rises by 3 units. If the quantity demanded before the price change was 30 units, what was the price at this demand? Calculate.

Answer»

In △ABC AB=AC⇒∠B=∠C (ANGLES opposite to EQUAL sides are equal)Now using angle sum property∠A+∠B+∠C=180 ∘ ⇒80 ∘ +∠C+∠C=180 ∘ ⇒2∠C=180 ∘ −80 ∘ ⇒∠C= 2100 ∘ =50 ∘ now ∠C+∠x=180 ∘ (Angles MADE on straight line (AC) are supplementary)⇒50 ∘ +∠x=180 ∘ ⇒∠x=180 ∘ −50 ∘ =130 ∘@ARSH[email PROTECTED]_arsh_deep_29


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