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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