Question
$20m : 70m = Rs. 8 : Rs. .$
✓
Answer
$\frac{20\text{m}}{70\text{m}}=\frac{\text{Rs.}\ 8}{\text{x(let)}}$
$\Rightarrow\frac{20}{70}=\frac{8}{\text{x}}$
$\Rightarrow20\times\text{x} = 70\times8$ [by cross multiplication]
$\Rightarrow\text{x}=\frac{70\times8}{20}=28$
$20m : 70m = Rs. 8 : Rs. 28$
$\Rightarrow\frac{20}{70}=\frac{8}{\text{x}}$
$\Rightarrow20\times\text{x} = 70\times8$ [by cross multiplication]
$\Rightarrow\text{x}=\frac{70\times8}{20}=28$
$20m : 70m = Rs. 8 : Rs. 28$
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