Question

3. Express the following statements as a linear equation in two variables.

(i) The sum of two numbers is 34.

(ii) The cost of a ball pen is ` 5 less than half the cost of a fountain pen.

(iii) Bhargavi got 10 more marks than double the marks of Sindhu.

(iv) The cost of a pencil is ` 2 and a ball point pen is ` 15. Sheela pays ` 100

for the pencils and pens she purchased.

(v) Yamini and Fatima of class IX together contributed ` 200/- towards the Prime

Minister’s Relief Fund.

(vi) The sum of a two digit number and the number obtained by reversing the order of its

digits is 121. If the digits in unit’s and ten’s place are ‘x’ and ‘y’ respectively.​

Answer 1

Answer: 1. x + y = 34

2. cost of ball pen be x and fountain be y

acco. to ques.

x=y+5

3. bhargavi's marks be x and marks of sindhu be y

acco. to ques.

10 + x =2y

4.cost of pencil be x and pen be y

so,

2x + 15y =100

5. x+y= 200

6.

Step-by-step explanation: