SSC JE Civil Engineering 23-Sep-2019 Shift 1 Solved Paper

(1:25,000) is the common scale adopted in the form of a representative fraction (RF) for the forest map.
These are relatively easy to do, since it means only that we convert the denominator of our RF to the larger units. Convert from RF of 1:25,000 to a verbal scale, in metric.
⇒ $\frac{1\mathrm{map}}{25,000\mathrm{ground}}$
$=\frac{1\mathrm{cm}\mathrm{map}}{25,000\mathrm{cm}\mathrm{ground}}\times \frac{100,000\mathrm{cm}}{1\mathrm{km}}$ $\times \frac{\frac{1}{100,000}}{\frac{1}{100,000}}$
= $\frac{1\mathrm{cm}\mathrm{map}}{0.25\mathrm{km}\mathrm{ground}}$
Therefore, one centimeter on this map represents 1/4 of a kilometer on the ground (or, 10 centimeters represents 2.5 kilometers, etc.).