DELHI POLICE QUANT QUIZ

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Question 1:

A and B can separately do a piece of work in 20 and 15 days respectively. They worked together for 6 days after which B was replaced by C. The work was finished in next 4 days. The number of days in which C alone could do the work is :

Question 2:

A mixture contains $30 \%$ alloy and the alloy contains $80 \%$ pure metal. To obtained 120 $\mathrm{kg}$ pure metal how much mixture is needed?

Question 3:

Average number of masks of a medicine company is $\mathrm{N}$ and average number of sanitizers of the company is $56 .$ If masks and sanitizers are in the ratio of $7: 11$ and overall average of both is $52.5 .$ Find average of number of masks.

Question 4:

In a division sum, divisor is 10 times of quotient & 5 times of remainder, if remainder is 46 then find the dividend.

Question 5:

A certain sum of money amounts to Rs. 5000 in 5 years at $10 \%$ per annum. In how many years will it amount to Rs. 6000 at the same rate?

Question 6:

A starts a small business with Rs 3,600. At the end of few months, B joined the business with Rs 4,000. If the annual profit between A and B was divided in the respective ratio of $6: 5$, then B joined the business after how many months from the start of the business?

Question 7:

Chiranjeev goes to his school from his house of $12 \mathrm{~km} / \mathrm{hr}$ he would reach 20 minute late. If he goes with speed of $18 \mathrm{~km} / \mathrm{hr}$ he would reach 10 minute early. Find the distance between his house to his school.

Question 8:

The incomes of $A$ and $B$ are in the ratio $9: 4$ and their expenditures are in the ratio $7: 3$. If each saves Rs. 2000 , what are their incomes?

Question 9:

A solid is hemispherical at the bottom and conical above. If the surface areas of the two parts are equal, then the ratio of radius and height of its conical part is:

Question 10:

A trader allows a trade discount of $20 \%$ and a cash discount of $6 \frac{1}{4} \%$ on the marked price of the goods and gets a net gain of $20 \%$ on the cost. By how much above the cost should the goods be marked for the sale?