DELHI POLICE CONSTABLE QUANT QUIZ

Attempt now to get your rank among 15 students!

Question 1:

$A$ can do piece of work in 10 days. $B$ can do it in 5 days and $C$ can destroy the whole work in 20 days. If they start working together, find the number of days in which the work will be completed?

Question 2:

If $x+\frac{1}{x}=17$, then what is the value of $\frac{x^{4}+\frac{1}{x^{2}}}{x^{2}-3 x+1}$?

Question 3:

A single discount equivalent to the following three successive discount of $30 \%, 20 \%$ and $10 \%$ is given by

Question 4:

In a $\Delta \mathrm{ABC}, \mathrm{AD}$ bisects $\mathrm{BC} . \mathrm{AD}$ is the angle bisector of angle $A .$ If $A B=15 \sqrt{3} \mathrm{~cm}$ and $\mathrm{BD}=9 \sqrt{5} \mathrm{~cm}$, then what is the area (in $\mathrm{cm}^{2}$ ) of triangle $\mathrm{ABC}$.

Question 5:

Rishu saves $x \%$ of her income. If her income increases by $26 \%$ and the expenditure increases by $20 \%$, then her savings increase by $50 \%$. What is the value of $x$ ?

serach-testwale
x