Let the unknown number be represented by the variable \(x\).
The problem states that "one-fourth of half of a number is 25". This can be translated into the following mathematical equation:
$ \frac{1}{4} \times \left( \frac{1}{2} \times x \right) = 25 $
Simplify the expression on the left side:
$ \frac{1}{8}x = 25 $
To solve for \(x\), multiply both sides of the equation by 8:
$ x = 25 \times 8 $
$ x = 200 $
The number is 200.
The question requires finding 20% of the number calculated (which is 200).
Calculate 20% of 200 using the percentage formula:
$ \text{Percentage} = \frac{\text{Part}}{\text{Whole}} \times 100 $
Or simply calculate the value:
$ 20\% \text{ of } 200 = \frac{20}{100} \times 200 $
$ = 0.20 \times 200 $
$ = 40 $
Thus, 20% of the number is 40.
Radha saves 25% of her income. If her expenditure increases by 20% and her income increases by 29%, then her savings increase by;
The income of A is 45% more than the income of B and the income of C is 60% less than the sum of the incomes of A and B. The income of D is 20% more than that of C. If the difference between the incomes of B and D is Rs. 13200, then the income (in Rs.) of C is:
The price of cooking oil increased by 25%. Find by how much percentage a family must reduce its consumption in order to maintain the same budget.
The population of a city increased by 30% in the first year and decreased by 15% in the next year. If the present population is 11,050 then population 2 years ago was:
The income of A is 30% less than the income of B and the income of B is 137.5% more than that of C. If the income of A is Rs. 28500 less than that of B, then the income (in Rs.) of C is: