Question

Field $X$ and $Y$ are to be enclosed with a fencing at the cost of $Rs.40$ per meter. If the cost on field $X$ is denoted by $C_x$ and that on field $Y$ is denoted by $C_y$, we have

• A. $C_x=C_y$,
• B. $C_x<C_y$,
• C. $C_x>C_y$,
• D. cannot be determined

Answer 1

The correct option is A $C_x=C_y$,

Perimeter of field $X$

$=470+290+(470-180)+180+(470-290)+470=4\times 470=1880m.$

Perimeter of field Y $=4\times 470=1880m$.

Hence, $C_x=1880\times 40$ and $C_y=1880\times 40$

$\Rightarrow C_x=C_y$