Question

The price of copper rose by 25 per cent and then fell by 20 per cent. The price after these changes was

• A. 20 per cent greater than the original price
• B. 5 per cent greater than the original price
• C. the same asth original price
• D. 5 per cent less than the original

Answer 1

Answer: (C)

the same asth original price

Answer 2

The correct answer is option (C).
⇒Percentage change = (+25)+(-20)+($\frac{-25\times20}{100}$)
⇒5-5 = 0
$\therefore$ effective percentage change is zero, the final price will be same as effective price.