The product of x and y is a constant. If the value of x is increased by 60%, by what percentage must the value of y be decreased?  Choose the correct choice from the following answers:	A) 30 %	B) 32 %	C) 35 %	D) 37.5 %	E) 40 %

Rationale: "x * y = constt . let x = y = 100 in beginning i . e . x * y = 100 * 100 = 10000 x ( 100 ) - - - becomes - - - > 1.6 x ( 120 ) i . e . 160 * new ' y ' = 10000 i . e . new ' y ' = 10000 / 160 = 62.5 i . e . y decreases from 100 to 62.5 i . e . decrease of 37.5 % answer : option d"
Answer: D