CBSE Class 10-Mathematics: Chapter – 4 Quadratic Equations Part 26 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 15:

A piece of cloth costs ₹ . If the piece was longer and each metre of cloth costs ₹ less the cost of the piece would have remained unchanged. How long is the piece and what is the original rate per metre?

Answer:

Let the length of piece

Rate per meter

New length

New rate per meter

According to question,

Rate per meter

Question 16:

solve by quadratic formula.

Answer:

Or

Question 17:

The length of the hypotenuse of a right-angled triangle exceeds the length of the base by and exceeds twice the length of the altitude by . Find the length of each side of the triangle.

Answer:

Let base

Altitude

Hypotenuse

Que-17-Che-3-the Length of Each Side of the Triangle

According to question,

And

Base

Altitude

Hypotenuse