CAT Practice : Percents, Profits

The golden ratio idea is so interesting that we have repeated it.

Percents - Golden Ratio

    Q.11: a is x % of b, b is x% more than a. Find x.
    1. 50%
    2. 62%
    3. 75%
    4. 37%

 

  • Correct Answer
    Choice B. 62%

Detailed Solution

a = bx
b = a (1 + x), substituting this in the previous equation, we get
x (x + 1) = 1
x2 + x - 1 = 0
or x is approximately 0.62 or 62%. Choice (B).

Correct Answer: 62%



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