# 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

According to question,

And

Base

Altitude

Hypotenuse