Question

When price falls from ₹100 to ₹50 the demand increases by 200 units. Find the original quantity demanded

Answer 1

As price decreased by 50% The demand should also increase 50% Therefore the increased demand is 200 units so to get original demand we should decrease it by 50% The answer will be (50÷100) ×200 =100units

Answer 2

original quantity = initial price/initial quantity demand x change in quantity demand/change in price.