Math Word Problems Demystified - A Self Teaching Guide

(Marvins-Underground-K-12) #1
7 :

3in:
240 miles

¼

8in:
x
240  8 ¼ 3 x

1920 ¼ 3 x

1920
3

¼

31 x
31
640 miles¼x

8 :

2 gal:
420 sq:ft:

¼

x
1050 sq:ft:

420 x¼ 2  1050

420 x¼ 2100

4201 x
4201

¼

2100

420

x¼5 gallons

9 :

3 :5 cups
4 people

¼

xcups
9 people

4 x¼ 9  3 : 5

4 x¼ 31 : 5

41 x
41

¼

31 : 5

4

x¼ 7 :875 cups

10 :

5 pairs
$ 89

¼

12 pairs
x
12  89 ¼ 5 x

1068 ¼ 5 x

1068
5

¼

51 x
51
$ 213 : 60 ¼x

LESSON 6 Using Proportions 59

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