A number x is 7 times another number y. The percentage that y is less than x is Options: A) 12.5 % B) 85.7 % C) 80 % D) 11 % E) 1 %

Rationale: "say y = 1 and x = 7 . then y = 1 is less than x = 7 by ( 7 - 1 ) / 7 * 100 = 6 / 7 * 100 = 85.7 % . answer : b ."
Answer: B