CBSE Class 10-Mathematics: Chapter –4 Quadratic Equations Part 26

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Question 15:

A piece of cloth costs Rs. . If the piece was longer and each metre of cloth costs Rs. 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.

The Length of Each Side of the Triangle

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According to question,

And

Base

Altitude

Hypotenuse