DELHI POLICE CONSTABLE QUANT QUIZ

Question 1:

4 years hence, the ratio of ages A and B will be $5: 7$ and 6 years hence, the ratio of ages will be $11: 15$, then find their present ages.

20 years, 26 years

16 years, 24 years

18 years, 28 years

12 years, 15 years

Question 2:

A and $B$ borrowed Rs. 3000 and Rs 3200 respectively at the same rate of interest for $2 \frac{1}{2}$ year. If $B$ Paid RS 40 more interest than $A$, find the Rate of interest.

5%

7%

8%

6%

Question 3:

The perimeter of a rhombus is $60 \mathrm{~cm}$ and one of its diagonal is $24 \mathrm{~cm}$. The area of rhombus is how much?

208${~cm}^{2}$

216${~cm}^{2}$

232${~cm}^{2}$

336${~cm}^{2}$

Question 4:

The average age of 3 girls is 24 years and the ratio of their age is $3: 4: 5$. Then the age of youngest girl is:

15 years

24 years

18 years

21 years

Question 5:

The lateral surface area of a hollow cylinder is $4224 \mathrm{~cm}^{2}$. It is cut along its height and formed a rectangular sheet of width $33 \mathrm{~cm}$. Find the perimeter of rectangular sheet?

327

322

342

360

Question 6:

What should come in place of question mark (?) in the following question ?

$(44 \%$ of 4957$)-(46 \%$ of 4577$)=?$

85.56

65.25

75.66

45.05

Question 7:

Find the mode of the data 21, 18 , 16 , 15 , 20 , 19 , 23 , 10

17.5

17.75

20

17.2

Question 8:

Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs.4000 , the new ratio becomes 40 : 57 . What is the salary of Sumit after increment ?

Rs.23000

Rs.30000

Rs.38000

Rs.35000

Question 9:

If $3 a+2 b=49$ and $a b=8$ then find the value of $9 a^{2}+4 b^{2} ?$

2497

2301

2137

2305

Question 10:

$\mathrm{ABCD}$ is a parallelogram, in which $\mathrm{AB}=14$ $\mathrm{cm}, \mathrm{BC}=18 \mathrm{~cm}$ and $\mathrm{AC}=16 \mathrm{~cm}$ then find the length of second diagonal.

$24 \mathrm{~cm}$

$20 \mathrm{~cm}$

$32 \mathrm{~cm}$

$28 \mathrm{~cm}$