R. S. Aggarwal Solutions for Chapter: Percentage, Exercise 1: EXERCISE 10A

Out of $100$ students, $50$ failed in English and $30$ in Mathematics. If $12$students failed in both English and Mathematics, then the number of students who passed in both the subjects is _____.

In school, $40\%$ of the students play football and $50\%$ play cricket. If $18\%$ of the students play neither football nor cricket, the percentage of students playing both is _____.

The population of a district is $296000$ out of which $166000$ are men. $50\%$ of the total population consists of literates. If $70\%$ of the men are literate, how many women are illiterate?

In a school, $\frac{1}{5}\mathrm{th}$ of girls and $\frac{1}{4}\mathrm{th}$ of boys are less than $12$years of age. If there are $1000$ students in the school and$\frac{2}{5}\mathrm{th}$ of them are girls, then what percentage of students are $12$ years or more in age?

$605$ toffees are equally distributed among some children in such a way that each child gets toffees equal to $20\%$ of the number of all children. How many toffees does each child get?

On increasing the tax on a commodity by $20\%$, its consumption is decreased by $20\%$. The effect on the revenue obtained is _____.

Due to a fall of $20\%$ in the rates of wheat a man can buy $10 \mathrm{kg}$ more than before for $₹ 600$. What is the decreased rate per $\mathrm{kg}$?

$20$ litres of a mixture of milk and water contains $2\%$ water. How much pure milk should be mixed with it to get $1\%$ water in the new mixture?