Question

the total cost of flooring a room at 8.50 per square metre is 510.if the length of the room is 8 metre, find the breadth.

Answer 1

Answer :

Breadth of rectangle = 7.5 m

Step-by-step explanation :

Given :

Rate of flooring a room = Rs 8.50 / metre²

Cost of flooring = Rs 510

We know that ;

Area of room = ( Cost / Rate ) of flooring.

⇒ 510 / 8.50

⇒ 60 m²

Now,

Area of room = 60 m²

⇒ Length × Breadth = 60

⇒ 8 × Breadth = 60

⇒ Breadth = 60 / 8

⇒ Breadth = 7. 5 m

Hence, the breadth of room is 7.5 m.

Answer 2

HEY MATE!!! HERE'S UR ANSWER!!^_^
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Cost of flooring per square meter  = Rs 8.50(given)

Total cost of flooring the room=Rs 510(given)

Length=8m(given)

$area \: of \: the \: room \: = \frac{510}{8.50}(formula = \frac{cost \: of \: flooring \: per \: sqare.m}{total \: cost \: \: of \: flooring \: of \: room}) \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 60 {m}^{2}$

$area \: of \: the \: room \: = l \times b(where \: l \: is \: the \: length \\ and \: b \: is \: the \: breadth) \\ \\ 60 = 8 \times b(l=8 given)\\ b = \frac{60}{8} \\b = 7.5m$

$breadth \: of \: the \: room \: is \: 7.5m$

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HOPE THIS HELPS YOU!!! ^_^