For the following questions answer them individually
Rajiv sells a pen at a profit of 5 percent. If he sells the pen for Rs.36 more, then he earns a profit of 14 percent. What is the cost price of the pen?
What is the value of $$\tan 10^{\circ}.\tan 25^{\circ}.\tan 45^{\circ}.\tan 65^{\circ}.\tan 80^{\circ}$$
$$x^{4} + \frac{1}{x^{4}} = 16$$, then what is the value of $$x^{2} + \frac{1}{x^{2}}$$?
The table given below shows the cost price and value of profit of 6 articles.
J1 = The value of average cost price of A, B, C and D.
J2 = The total profit of all articles.
What is the value of (J1 : J2)?
Piyush marks the price of his article 30 percent more than its cost price. If he sells the article for Rs.5720 after allowing a discount of 20 percent, then what will be the cost price of the article?
Parallel sides of a trapezium are 21 cm and 14 cm and its area is 75 $$cm^{2}$$. What is the distance between parallel sides?
The line chart given below shows the number of male teacher and female teachers in 5 schools.
J1 = Total number of male and female teachers in school P.
J2 = The difference between the total number of male and the total number of female teachers in all the 5 schools.
What is the value of (J1: J2)?
What is the value of $$\frac{7 of 14 \div 4}{5 \times 4 \div 2} + \frac{6 \div 12 \times 3}{5 \div 25 \times 2} + \frac{15 \div 5 \times 6}{5 \times 15 \div 6}$$?
The ratio of the present age of two girls is 3 : 4. After two year the ratio will be 7 ; 9. Which of the following statement(s) is/are correct?
l. Ratio of their ages after 10 year is 6 : 7.
II. Ratio of their ages after 12 years is 6 : 7.
ABCD is a cyclic quadrilateral in which angle B is opposite angle D. If $$\angle B = x + 10$$ degree and $$\angle D = 2x + 35$$ degree, then what is the value of x?