# CBSE Class 10-Mathematics: Chapter – 3 Pair of Linear Equation in Two Variables Part 2 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 3:

Find the value of p and q for which the system of equations represent coincident lines

For the following system of equation, the condition must be

Form (1) and (2)

Solve it, to get

Substitute value of q in equation (1)

On solving we get,

Question 4:

Students are made to stand in rows. If one student is extra in a row there would be rows less. If one student is less is less in a row there would be rows more. Find the number of students in the class.

No. of rows be

Let the number of students be

Number of students in the class will be

One student extra, rows less

One student less, three more rows

From (1) & (2)

Solve it, to get …

Question 5:

The larger of two supplementary angles exceeds the smaller by , find them.