If the length and breadth of a room are $15 m$ and $10 m$ respectively, then
Area : Length $=$ ________ $[10 : 1 / 10 : 3]$

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Solution

Given that,
Length of the room $= 15 m$
Breadth of the room $= 10 m$
Area of the room $= 15 \times 10 = 150 m^{2}$
Now, ratio of area to the length of the room $= 150 : 15$
Lowest form of $150 : 15 = \frac{150}{15} = \frac{10}{1} = 10 : 1$ ( Divide both $150$ and $15$ by their HCF $15$ )
Hence, Area : Length $=$ $10 : 1$

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