Question

The cost of flooring a room at RS.9.50 per square metre is RS.1330 . If the breadth of the room is 7m. find its length
​

Answer 1

$\huge\mathfrak\red{\underline{Answer:}}$

$\rule{100}2$

$\textbf{\underline{\underline{Step-By-Step\:Explanation:-}}}$

From the given information, it is clear that the floor is in rectangular shape.

Also,

Area of the rectangular room

$\sf =\dfrac{Total\:cost\:of\:flooring\:room}{Cost\:of\:flooring\:per\:meter\:square}$

→ The cost of flooring a room pr meter square = Rs. 9.50

→ Total cost of flooring = Rs. 1330

$\sf =\dfrac{1330}{9.50}$

$\sf = 140$

Hence,

Area of the rectangular floor is 140 m²

∵ Area of rectangle = length × breadth

$\sf {140} = {length}\times{7}$

$\sf\implies {length}=\dfrac{140}{7}$

$\sf\implies {length} =\cancel{\dfrac{140}{7}}$

$\sf \therefore {length}=20$

Hence,

$\textbf\blue{Length\: of\: the\: given\: floor\: is\:20\: m}$

$\rule{200}2$

Answer 2

Step-by-step explanation:

THE FLOUR IS 20M HENCE THE ANSWER IS 20M