3 pencils and 4 pens cost `Rs. 270` while 4 pencils and 3 pens cost Rs. 150 . Find the combined cost of pencil and a pen.

3 pencils and 4 pens cost Rs. 270 while 4 pencils and 3 pens cost Rs. 150 . Find the combined cost of one pencil and one pen.

4 Pens and 6 Pencils cost Rs. 80. Find the cost of 12 pens and 18 pencils.

5 pencils and 7 pens together cost Rs 50, whereas 7 pencils and S pens together cost Rs 46. Find the cost of one pencil and that of one pen.

Form the pair of linear equations in the following problem,and find the solution graphically: 5 pencils and 7 pens together cost Rs 50, whereas 7 pencils and 5 pens together cost Rs 46. Find the cost of one pencil and a pen.

Form the pair of linear equations in the following problems, and find their solutions graphically. (i) 10 students of Class X took pan in a Mathematics quiz. If the number of girls is 4 more than the number of boys, find the number of boys and girls who took part in the quiz. (ii) 5 pencils and 7 pens together cost Rs 50, whereas 7 pencils and 5 pens together cost Rs 46. Find the cost of one pencil and that of one pen.

Form the pair of linear equations in the following problems, and find their solutions graphically. 5 pencils and 7 pents together cost Rs 50, whereas 7 pencils and 5 pens together cost Rs 46. Find the cost of one pencil and that of one pen.

37pens and 53 pencils together cost Rs.320 , while 53 pens and 37 pencils together cost Rs ,400 .Find the cost of a pen and that of a pencil.

One pencil costs Rs. 3 and one pen costs Rs. 25. The total cost of x pencils and y pens is

If 8 pens cost Rs. w, find the cost of 5 such pens.

Let us consider Example 2 in Section 3.3, i.e., the cost of 2 pencils and 3 erasers is Rs 9 and the cost of 4 pencils and 6 erasers is Rs 18 . Find the cost of each pencil and each eraser.