Disha Expert Team Solutions for Chapter: Percentage, Exercise 1: Exercise

The price of consumer goods increased by $50\%$ and its consumption decreased by $25\%$. Find the ratio of new expenditure to initial expenditure?

$10$ litres of water is added to $50$ litres of a solution containing $20\%$ of alcohol in water. What is the concentration of alcohol in the solution now?

$p$ is six times as large as $q$. The percent that $q$ is less than $p$, is _____.

In a class, the number of boys is more than the number of girls by $12\%$ of the total strength. The ratio of boys to girls is _____.

In some quantity of ghee, $60\%$ is pure ghee and $40\%$ is vanaspati. If $10 kg$ of pure ghee is added, then the strength of vanaspati ghee becomes $20\%$. The original quantity was _____.

The ratio of the salary of a worker in July to that in June was $2\frac{1}{2} : 2\frac{1}{4}$ by what $\%$ the salary of July more than the salary of June. Also, find by what percentage the salary of June was less than that of July?

In an examination $80\%$ of the student passed in English, $85\%$ in mathematics and $75\%$ in both English and mathematics. If $40$ student failed in both the subject, then find the total number of students?

The monthly salary of Shahid and Kareena together is $Rs. 28000$. The salary of Shahid and Kareena is increased by $25\%$ and $12.5\%$ respectively then the new salary of Kareena becomes $120\%$ of the new salary of Shahid. The new (or increased) salary of Shahid is _____.