A number x is 4 times another number y. The percentage that y is less than x is	Choose the correct answer:
A) 12.5 %	B) 75 %	C) 80 %	D) 11 %	E) 1 %

Rationale: "say y = 1 and x = 4 . then y = 1 is less than x = 4 by ( 4 - 1 ) / 4 * 100 = 3 / 4 * 100 = 75 % . answer : b ."
Answer: B