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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?
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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