Question

the cost of flooring a room at rupees 60 per square metre is rupees 342 if the room is 12 metre wide final its length​

Answer 1

Answer:

$\red { Length \: of \:the \: room } \green {=0.475 \:m}$

Step-by-step explanation:

$Let \: the \: dimensions \: of \: a\:floor \:of \: a \\room :$

$Length = l \: m\\Breadth (b) = 12 \: m$

$Cost \:of \: flooring \:1 \: square \: metre = Rs\:60$

$Cost \:of \: area \: of \: floor = \frac{342}{60}\\= 5.7 \: m^{2}$

$Area \: of \:the \: floor = 5.7 \:m^{2}$

$\implies l \times b = 5.7$

$\implies l = \frac{5.7}{b}\\= \frac{5.7}{12}\\= 0.475 \:m$

Therefore.,

$\red { Length \: of \:the \: room } \green {=0.475 \:m}$

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