The price of onion is increased by 25% how much percent should satish reduces his consumption so that his expenditure for purchase of onion does not change

Question

It is maths question of percentage

Answer 1

Let X represent the old price of onions; therefore, the new price would be 1.25X. If Satish used to but Y₁ onions at the old price, the cost would be XY₁. Under the new price, Satish could buy Y₂ onions at the new price. If we equate he old total cost to the new total cost, the equation to be solved is

XY₁ = 1.25XY₂ and solve for Y₂. This gives

Y₂ = Y₁ / 1.25, so the new quantity of onions Satish can buy is 0.8 Y₁ or 80% of the original amount.