ICSE Class 8 Answered

Let the original price of the sugar be Rs. 100.

 The price of the sugar is increased by 20%.

New price of sugar = 20% of 100 = Rs. 20

Increased price of the sugar = 100 + 20 = Rs. 120.

Increase in price = 120 - 100 = Rs. 20

Sugar of cost Rs. 20 is to decreased out of the increased cost of Rs. 120.

Percentage decrease = (20/120) x 100 = 100/6 = 16 2/3 %.

Hence, the consumption of 16 2/3% of sugar be decreased so that the expenditure on sugar remains the same.