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?	Answers:
A) Rs. (xd/y) B) Rs. xd C) Rs. (yd/x) D) Rs. yd E) none
Explanation:   cost of x metres of wire = Rs.d   cost of 1 metre of wire = Rs.(d/x)   cost of y metre of wire = Rs.(y × d/x) = Rs. (yd/x)   Answer: Option Rs. (yd/x)
<result>C</result>
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?