If two positive numbers are in the ratio 1/9 : 1/7, then by what percent is the second number more than the first?  Answers
A) 67%.  B) 70%.  C) 60%.  D) 28.6%.  E) 80%.
Given ratio = 1/9 : 1/7 = 7 : 9   Let first number be 7x and the second number be 9x.   The second number is more than first number by 2x.   Required percentage = 2x/7x * 100 = 28.6%.   Answer: 28.6%.
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If two positive numbers are in the ratio 1/9 : 1/7, then by what percent is the second number more than the first?