1.  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?
A. ₹ (xy/d)
B. ₹ (xd)
C. ₹ (yd)
D. ₹ (yd/x)

Answer: Option D

Explanation:

Cost of x metres = ₹ d.

Cost of 1 metre = ₹ d
x

Cost of y metres = ₹ d . y = ₹ yd .
x x