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Example 2

If the number of apples in a bag is 12 and the number of peaches is 3, what is the ratio of apples to peaches ?

Solution:

Number of apples   = 12
Number of peaches = 3
\ Ratio of apples to peaches is 12 : 3 or 4 : 1.

Example 3

Two complementary angles are in the ratio 1 : 2 what is their measure ?

Solution:

Let one angle be x and the other 2x

\ x + 2x = 900

          3x = 900

            x = 300

     \ 2 x = 600

The two angles measure 300 and 600.

Example 4

A 500 ft tall building is drawn as 25 cm tall on a paper. If its width is drawn as 2 cm what is the actual width of the building ?

Solution:

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Index

5.1 Introduction
5.2 Ratio And Proportionality
5.3 Similar Polygons
5.4 Basic Proportionality Theorem
5.5 Angle Bisector Theorem
5.6 Similar Triangles
5.7 Properties Of Similar Triangles

Chapter 6

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