Question : A product has an initial quantity demanded of 120 units at a price of INR 12 per unit. Due to a price change, the new price is INR 10 per unit, and the new quantity demanded is 160 units. Calculate the percentage change in price.
Option 1: -10%
Option 2: -12.5%
Option 3: -16.7%
Option 4: -20%
Correct Answer: -16.7%
Solution : The correct answer is (c) -16.7%
Percentage change in price = [(New price - Initial price) / Initial price] * 100%
Given that the initial price is ₹12 per unit and the new price is ₹10 per unit, we can substitute these values into the formula:
Percentage change in price = [ (10 - 12) / 12 ] * 100%
= [ (-2) / 12 ] * 100%
= (-1/6) * 100%
= -16.7%
Therefore, the percentage change in price is -16.7%.
Question : A product has an initial quantity demanded of 80 units at a price of INR 6 per unit. Due to a price change, the new price is INR 8 per unit, and the new quantity demanded is 60 units. Calculate the percentage change in quantity demanded.
Option 2: -20%
Option 3: -25%
Option 4: -30%
Question : A product has an initial quantity demanded of 100 units at a price of INR 10 per unit. Due to a price change, the new quantity demanded is 120 units. Calculate the price elasticity of demand.
Option 1: 0.5
Option 2: 1.5
Option 3: 2.0
Option 4: 2.5
Question : If the price of a product increases from INR 50 to INR 60 per unit, and the quantity demanded decreases from 80 units to 70 units, calculate the percentage change in quantity demanded.
Option 3: -14%
Question : The price of a product increases from INR 80 to INR 100 per unit, resulting in a decrease in quantity demanded from 60 units to 40 units. Calculate the percentage change in total expenditure.
Option 1: -20%
Option 2: 0%
Option 3: -10%
Option 4: -25%
Question : The price of a product decreases from INR 100 to INR 80 per unit, resulting in an increase in quantity demanded from 50 units to 70 units. Calculate the percentage change in price.
Option 2: -25%
Option 3: -33.33%
Option 4: -50%
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