The price of sugar is decreased by 30%. Find by how much percent a man should increases his consumption so that the expenditure remains same?
Answer & explanation
Correct answer: option 2
30% = \(\frac{3}{10}\)
Price ratio: 10 : 7
Consumption: 7 : 10 ⇒ 3 (increased by)
Hence,
Increased percentage = \(\frac{3}{7}\) × 100% = 42\(\frac{6}{7}\)%