Price of sugar rises by 20%. By how much percent should

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Price of sugar rises by 20%. By how much percent should the consumption of sugar be reduced so that the expenditure does not change?

1. 20%
2. 10%
3. 16 2 %
  3
4. 15%

Correct Option: C

Using Rule 8,
Tricky approach
Required percentage decrease

=	Increase	× 100
	100 + Increase

=	20	× 100
	100 + 20

=	100	= 16	2	%
	6		3