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                                    The Percentage change in demand is three times the percentage change in price. If original demand was 30 units at the price of ₹ 7 per unit, then calculate the price elasticity of demand, given price increased by 10% . Indicate whether the demand is elastic or not. Also calculate the new quantity demanded. | 
                            
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Answer» Correct Answer - Price Elastictiy of demand `(E_(d)) = (-)3;` Demand is highly elastic as `E_(d) gt1 ; ` New Quantity =21 units Given: percentage change in demand = 3times of percentage change in price i.e % change (fall) in demand = `3 xx 10 = -30 % ` (as price has increased by 10 %) Price Elasticity of Demand `(E_(d))= ("percentage change in Quantity Demand ")/("Percentage Change in price")` price Elasticirty of Demand `(E_(d))=(-30)/10 = (-) 3` As price is increasing , the quantity demanded will fall. it maeans, New Quantity = Original Quantity (Q) -% fall in demand = 30 - 30 % of 30 -30 -9 =21 units  | 
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