Asked by kumar
A piece of cloth costs Rs.35. If the piece were 4m longer and each meter were to cost Rs.1 lesser,then the total cost would remain unchanged. Find the length of the piece of cloth ?
Answers
Answered by
oobleck
If the length is x and the cost is c, then
xc = 35
(x+4)(c-1) = 35
(x+4)(35/x - 1) = 35
solve to get x = 10
check: 10*3.5 = 14*2.5 = 35
xc = 35
(x+4)(c-1) = 35
(x+4)(35/x - 1) = 35
solve to get x = 10
check: 10*3.5 = 14*2.5 = 35
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