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?  Pick one.
A) Rs. (ydS  B) s.	(xy/d)  C) Rs. (xd)  D) Rs. (yd/x)  E) Rs. (yd)
Explanation:   Cost of x metres = Rs. d.   Cost of 1 metre=Rs.(d/x)   Cost of y metres=Rs.[(d/x).y]=Rs.(yd/x)   Answer: Rs. (yd/x)
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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?