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
A) Rs.(xy/d)  B) Rs.(yd/x)  C) Rs.(y/d)  D) Rs.(xd)  E) Rs.(x/d)
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 is Rs.(yd/x).
<result>B</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?