The length of a rectangle is reduced by 30%. By what % would the width have to be increased to maintain the original area?	Pick one.
A) 42.8 %	B) 20 %	C) 25 %	D) 30 %	E) 35 %

Rationale: "sol . required change = ( 30 * 100 ) / ( 100 - 30 ) = 42.8 % a"
Answer: A