Percentage 3
1. If the price of petrol increases by 25%, by how much must a user cut down his consumption so that his expenditure on petrol remains constant? A.25% B.16.67% C.20% D.33.33% [expand title=”Answer & Explanation”] Answer:- 3 (X + Y +XY/100) = Net increase or decrease in expenditure 25 + (-Y) + (-25y/100) = 0 […]