ABC26GN4308 · Area

Subject: General Aptitude · Chapter: Area · Exam: · Marks: · Difficulty:

The length of a rectangular plot is 20 metres more than its breadth. If the cost of fencing the plot @ ` 26.50 per metre is ` 5300, what is the length of the plot in metres?

(a)40

(b)50

(c)120

(d)Data inadequate

(e)None of these

Answer

Answer (as printed):

Explanation

Let breadth = $x$ metres. Then, length $=(x+20)$ metres $$\text { Perimeter }=\left(\frac{5300}{26.50}\right) \mathrm{m}=200 \mathrm{m} .$$ $$\begin{aligned} \therefore 2[(x+20)+x]=200 & \Leftrightarrow 2 x+20=100 \Leftrightarrow 2 x=80 \\ & \Leftrightarrow x=40 . \end{aligned}$$ Hence, length $=x+20=60 \mathrm{m}$.

Open in whiteboard · Browse this chapter in the app