DELHI POLICE MATHS QUIZ-50

The selling price of an article is marked 20% above its cost price. If the shopkeeper makes a profit of $8 \%$ even after giving discount $\mathrm{x} \%$, then find the value of $x$.

Arun spends $30 \%$ of his monthly income on groceries, $20 \%$ of the remaining on rent, and $45 \%$ of the remaining on children's education and others. If he saves ₹ 5,544 a month, then how much (in ₹) does he spend on rent?

In a division sum, the divisor is 18 times the quotient and 9 times the remainder. If the remainder is 26 , then the dividend is:

The average salary of all the employees in a workshop is ₹ 18,000. The average salary of 7 technicians is ₹ 24,000 and that of the remaining employees is ₹ 12,000. What is the total number of employees in the workshop?

A person spends 22% of the monthly income on house rent, 40% of the income on house expenses and groceries, and 50% of the remaining on children's education and other heads. If the monthly savings are Rs. 3,800, then what is the expenditure (in Rs) on education and other heads?

A solid piece of iron in the form of a cuboid of dimensions $24.5 \mathrm{~cm} \times 16.5 \mathrm{~cm} \times 12 \mathrm{~cm}$, is melted to form a solid sphere. What is the radius (in $\mathrm{cm}$ ) of the sphere? $\left(\right.$ Use $\left.\pi=\frac{22}{7}\right)$

What will be the ratio of the area of square to area of circle which inscribed in the square?

The total number of gold medals and silver medals won by India in the Games is 85. Which of the following cannot be the ratio between the number of silver medals won by India and the number of gold medals?

A borrows a sum of ₹ 9,000 for 3 years at 5 % simple interest. He lends it at simple interest to B at 7 % for 3 years. What is his gain (in ₹)?

18 persons can complete a work in 15 days when they work 6 hours a day. The time (in days) taken by 12 persons working 10 hours a day to complete the same work, is: