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Aptitude Day 338

Answers of Day 337: 1. 500.
                                    2. y.

Problems on Percentage:

1. If 30% of a = b, then b% of 30 is the same as:

Solution:
                   30a/100 = b

                   b% of 30 = b/100 * 30
                                   = 30a/100 * 1/100 *30
                                   = 0.9% of a.

2. If 20% of a number is 8 less than 30% of that number, then the number is:

Solution:
                  30/100 * x - 20/100 * x = 8.

                  By solving the above equation, we get
                  x = 80.
               


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