Question 10

A piece of cloth costs Rs. 35. If the piece were 4 m longer and each meter were to cost Rs. 1 lesser, then the total cost would remain unchanged. How long is the piece of cloth?

Solution

Let the length of cloth be x and price per meter be p.

35 = xp

A/c to question ,

xp = (x + 4)(p -1)

x - 4p = -4

x - 140/x = -4

Solving for x , x= 10

So, the answer would be option a)10.

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