If two positive numbers are in the ratio 1/8 : 1/5, then by what percent is the second number more than the first?

A. 40%
B. 33 1/3%
C. 60%
D. 66 2/3%
E. None of these
Explanation:
Given ratio = 1/8 : 1/5 = 5 : 8
Let first number be 5x and the second number be 8x.
The second number is more than first number by 3x.
Required percentage = 3x/5x * 100 = 60%.