The price of petrol is increased by 28%. By what percentage should the consumption be decreased by the consumer, if the expenditure on petrol remains unchanged? (Correct to 2 decimal places) |
12.35% 21.88% 20.25% 25.75% |
21.88% |
The price of petrol is increased by 28% Price is inversely Propotional to Expenditure . Original : New Price 100 : 128 Expenditure 128 : 100 Required Percentage = \(\frac{128-100}{128}\) × 100 = 21.875% = 21.88% |