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

Get top class preparation for CBSE right from your home: fully solved questions with step-by-step explanation- practice your way to success.

Question 3:

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

Answer:

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.

Answer:

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.

Answer:

________