Boys vs Girls Class Numbers
This problem requires calculating the percentage increase needed for the number of girls to become equal to the number of boys in a class.
- Number of boys: 36
- Number of girls: 24
Percentage Increase Calculation
To find the percentage increase, we first determine the difference in numbers and then calculate this difference as a percentage of the original number of girls.
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Calculate the difference between the number of boys and girls:
Difference = Number of boys - Number of girls
Difference = 36 - 24 = 12
This means 12 more girls are needed.
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Calculate the percentage increase required:
The formula for percentage increase is:
Percentage Increase = \( \frac{\text{Required Increase}}{\text{Original Number of Girls}} \times 100\% \)
Substitute the values:
Percentage Increase = \( \frac{12}{24} \times 100\% \)
Simplify the fraction:
Percentage Increase = \( \frac{1}{2} \times 100\% \)
Calculate the final percentage:
Percentage Increase = 50%
Therefore, the number of girls must be increased by 50% to equal the number of boys.
Important Questions from Percentage
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:
