If two positive numbers are in the ratio 1/8 : 1/7, then by what percent is the second number more than the first?	Choose the correct choice from the following answers
A) 14.3 % .
B) 70 % .
C) 60 % .
D) 68 % .
E) 80 % .

Rationale: given ratio = 1 / 8 : 1 / 7 = 7 : 8 let first number be 7 x and the second number be 8 x . the second number is more than first number by 1 x . required percentage = 1 x / 7 x * 100 = 14.3 % . answer : a
Answer: A