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. $Rs.\left(xd\right)$
• 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 = Rs. d
Cost of 1 metre = Rs. $\left(\frac{d}{x}\right)$
Cost of y metres = Rs. $(\frac{d}{x}.y)=Rs.\left(\frac{yd}{x}\right)$