Test Index

WAEC Mathematics 2013 Paper

© africaexams.com

Question : 32

Total: 48

The distance between two towns is 50km. It is represented on a map by 5cm. Find the scale used

1: 1,000,000
1: 500,000
1: 100,000
1: 10,000

Solution:

Concept:

Scale is the ratio of map distance to actual ground distance, expressed in the same units.

Explanation:

Actual distance

= 50\text{ km}

.

Convert to centimetres:

50\text{ km} = 50 \times 100{,}000 = 5{,}000{,}000\text{ cm}

.

Map distance

= 5\text{ cm}

.

Scale

= \dfrac{\text{map distance}}{\text{actual distance}} = \dfrac{5}{5{,}000{,}000} = \dfrac{1}{1{,}000{,}000}

.

Therefore, the scale is

1 : 1{,}000{,}000

.

Answer:

A.

1 : 1{,}000{,}000

© africaexams.com

Go to Question:

Prev Question

Next Question