Math Word Problems Demystified - A Self Teaching Guide

xþxþx
 6 ¼ 24

3 x
 6 ¼ 24

3 x
 6 þ 6 ¼ 24 þ 6

3 x¼ 30

31 x

31

¼

30

3

x¼ 10

x
 6 ¼ 4

The lengths of the sides are 10 inches, 10 inches, and 4 inches.

3 : Letx¼the width of the rectangle

and 2x
 10 ¼the length of the rectangle

P¼ 2 lþ 2 w

52 ¼ 2 ð 2 x
 10 Þþ 2 x

52 ¼ 4 x
 20 þ 2 x

52 ¼ 6 x
 20

52 þ 20 ¼ 6 x
 20 þ 20

72 ¼ 6 x

72

6

¼

61 x

61

12 inches¼x

2 x
 10 ¼ 2 ð 12 Þ
 10 ¼14 inches

The length is 14 inches and the width is 12 inches.

4 : Letx¼the measure of one angle

2 x¼the measure of the second angle

2 x
 20 ¼the measure of the third angle

LESSON 20 Word Problems in Geometry 247