Question

LINEAR EQUATIONS IN TWO VARIABLES
129
Express the following statements as a linear equation in two variables.
(1) The sum of two numbers is 34. 2 +4-34
(i) The cost of a ball pen is 5 less than half the cost of a fountain pen.
(ii) Bhargavi got 10 more marks than double of the marks of Sindhu.
(iv) The cost of a pencil is 2 and one ball point pen costs *15. Sheela pays 100
for the pencils and pens she purchased.
(​

Answer 1

Step-by-step explanation:

1: x+y=4.2

2:let ball pen be x and fountain pen be y

x-5=1/2y

2x-10=2y

2x-2y=10

3:let bhargavi marks be x and Sindhu marks be y

x+10=2y

x-2y=-10

4: let the number of pencil be x and number of ball point pen be y

2x+15y=100

Answer 2

Answer:

let the bhargavi be x and sindhu be y

bhargavi got 10 more marks than the double marks of sindhu =x+10=2y