Swathi starts her job with certain monthly salary and earns a fixed increment every year. If her salary was Rs. 22500 per month after 6 years of service and Rs. 30000 per month after 11 years of  service. Find her salary after 8 years of service (in Rs.).

If a fraction becomes 2 when 9 is added to its numerator and 1 when 2 is subtracted from its denominator then the fraction is ……………

The values of ‘x’ and ‘y’ if $\frac{5}{y}-\frac{2}{x}=\frac{7}{6}\backslash frac\{5\}\{y\}-\backslash frac\{2\}\{x\}=\backslash frac\{7\}\{6\}$  and $\frac{36}{x}-\frac{24}{y}=1\backslash frac\{36\}\{x\}-\backslash frac\{24\}\{y\}=1$ is …………

A certain number of two digits is four times the sum of the digits. If 9 is added to the number the digits in the number are reversed, then the number is …………

Six years ago a man was three times as old as his son. In 6 year’s time, he will be twice as old as his son. Then their present ages are

The total salary of 15 men and 8 women is Rs. 3050. The difference of salaries of 5 women and 3 men is Rs. 50. The sum of the salaries of 3 men and 3 women is ……………

If the sum of two numbers is 41 and their product is 400. Then the numbers are …………

A is twice as old as B. 10 years ago, A was four times as old as B. Their present ages are …………

If one quarter of the sum of two numbers is 14 and half of their difference is 5, then the numbers are

If $x=2p-3q,y=p+2qx\; =\; 2p-3q,\; \backslash ,y=p+2q$ and $z=q-3pz\; =\; q\; -\; 3p$  then $x^2+y^2+z^2+2yz+2zx+2xyx^2+y^2+z^2+2yz+2zx+2xy$  is .................