The product of x and y is a constant. If the value of x is increased by 30%, by what percentage must the value of y be decreased? Choose the correct choice:
A) 16 %
B) 23.07 %
C) 25 %
D) 30 %
E) 35 %

Rationale: "x * y = constt . let x = y = 100 in beginning i . e . x * y = 100 * 100 = 10000 x ( 100 ) - - - becomes - - - > 1.3 x ( 130 ) i . e . 130 * new ' y ' = 10000 i . e . new ' y ' = 10000 / 130 = 76.92 i . e . y decreases from 100 to 76.92 i . e . decrease of 23.07 % b"
Answer: B