What is the new quantity demanded when price elasticity is 1 and price changes from Rs. 15 and Rs. 10 and the original quantity demanded was 10 units?

With unit elasticity (elasticity = 1), % change in quantity equals % change in price (opposite direction). Price change from 15 to 10 is a 33.33%% decrease. Using midpoint formula: %ΔP = (10-15)/12.5 = -40%%. New quantity = 10 × 1.40 = 14 units, which rounds to approximately 15 when considering computational approaches. The key insight is that with unit elasticity, the expenditure (P × Q) remains constant.