If the cost of x metres of wire is d rupees, then what is the cost of y metres of wire at the same rate?
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cost of x meter wire = Rs. d
cost of 1 meter wire = Rs. (d/x)
cost of y meter wire = Rs. (d/x) × y = Rs. (dy/x)
cost of 1 meter wire = Rs. (d/x)
cost of y meter wire = Rs. (d/x) × y = Rs. (dy/x)
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