Question

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. Rs. $\left(\frac{xy}{d}\right)$
• B. Rs. $\left(xy\right)$
• C. Rs. $\left(yd\right)$
• D. Rs. $\left(\frac{yd}{x}\right)$

Answer 1

The correct option is D Rs. $\left(\frac{yd}{x}\right)$

Cost of $x$ metres wire $=Rs.d$

Cost of $1m$ wire $=Rs.\frac{d}{x}$

Cost of $y$ metres wire $=Rs.\frac{d\times y}{x}$