DELHI POLICE QUANT QUIZ

Marked price of an article is $20 \%$ more than its cost price. If $5 \%$ discount are available on its marked price then find out the profit percentage?

A solid cylinder has total surface area of 462 sq. $\mathrm{cm}$ Curved surface area is $\frac{1}{3}$ rd of its total surface area. The volume of the cylinder is:

An employer reduces the number of his employees in the ratio $9: 8$ and increases their wages in the ratio $14: 15 .$ If the original wage bill was Rs.18,900, find the ratio in which the wage bill is decreased:

A train running at speed of $54 \mathrm{~km} / \mathrm{hr}$ crosses a platform of same length as that of the train in 36 seconds. If train which is 230 meter long crosses the same platform in 25 seconds then find the speed of train B.

Rajesh started a business. After 4 months from the start of the business, Hemant and Raghu joined. The respective ratio between, the investments of Rajesh, Hemant and Raghu was 3 : 5 : 4. If Rajesh’s share in annual profit was Rs 125 more than Raghu’s share, what was the total annual profit earned?

A person has left an amount of Rs. $1,20,000$ to be divided between his two sons aged 14 years and 12 years such that they get equal amounts when each attains 18 years of age. If the amount gets a simple interest of $5 \%$ per annum, the younger son's share at present is :

Of the three numbers, the first is twice the second and is half of the third. If the average of these numbers is 56, the numbers in order are:

$\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ can do a piece of work in 30,20 and 10 days respectively. $A$ is assisted by $B$ on one day and by $\mathrm{C}$ on the next day, alternately. How long would the work take to finish?