A number is increased by 30% and then decreased by 30%, the final value of the number is ?	Answers: A) decreases by 7% B) decreases by 9% C) decreases by 8% D) decreases by 6% E) decreases by 5%
Here, x = 30 and y = - 30   Therefore, the net % change in value   = ( x + y + xy/100)%   = [30 - 30 + (30 * -30)/100]% or - 9%   Since the sign is negative, there is a decrease in value by 9%.   ANSWER: decreases by 9%
<result>B</result>
A number is increased by 30% and then decreased by 30%, the final value of the number is ?