Test Index

JAMB Geography 2022 Paper

Question : 15

Total: 40

Solution:

Concept:

Map scale is a ratio that relates distance on the map to actual distance on the ground.

Explanation:

The scale

2\text{ cm} = 1\text{ km}

means every

2\text{ cm}

on the map represents

1\text{ km}

on the ground.

The map distance between the towns is

20\text{ cm}

Set up the proportion:

2\text{ cm} : 1\text{ km} = 20\text{ cm} : x\text{ km}

So,

2x = 20 \times 1 = 20

Divide both sides by

2

x = \frac{20}{2} = 10\text{ km}

Therefore, the ground distance is

10\text{ km}

Answer:

10\text{ km}

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