Express the following statements in the form of simultaneous linear equations :
The total value of 3 copies (khata) and 2 pens is Rs. 44 and that of 4 copies (khata) and 3 pens is Rs. 61.

The cost of 3 pens and 5 pencils is Rs 40. Find the cost of 12 pens and 20 pencils

Express the following statements in the form of two simultaneous linear equations in two variables and determine whether these equations are solvable or not by the method of finding the relations among the ratios of the co-efficients of the same variables and the constant terms : Debsmita bought 3 pens and 4 pencils for Rs. 42. Her friend Nayana also bought 9 pens and a dozen of pencils for Rs. 126.

Express the following statements as a linear equation in two variables. The cost of a ball pen is 5 less than half the cost of a fountain pen.

Express the following statements as a linear equation in two variables. The cost of a ball pen is 5 less than half the cost of a fountain pen.

Express the following statements as a linear equation in two variables. The cost of a ball pen is 5 less than half the cost of a fountain pen.

Express the following statements as a linear equation in two variables. The cost of a ball pen is 5 less than half the cost of a fountain pen.

Express the following statements as a linear equation in two variables. The cost of a ball pen is 5 less than half the cost of a fountain pen.

The cost of 3 pens is Rs. 30, then the cost of 2 pens is Rs. 20.