Write a ratio for each word phrase. Write fractions in lowest terms. See Example 1.
3.40 mi to 30 mi 4.60 ft to 70 ft
5.120 people to 90 people 6.72 dollars to 220 dollars
7.20 yd to 8 ft 8.30 in. to 8 ft 9.24 min to 2 hr
10.16 min to 1 hr 11.60 in. to 2 yd 12.5 days to 40 hr
Find the best buy for each item. Give the unit price to the nearest thousandth. See Example 2.
(Source:Cub Foods.)
13.GRANULATED SUGAR14.GROUND COFFEE 15.SALAD DRESSING 16.BLACK PEPPER
17.VEGETABLE OIL 18.MOUTHWASH 19.TOMATO KETCHUP
20.GRAPE JELLY 21.LAUNDRY DETERGENT 22.SPAGHETTI SAUCE
Decide whether each proportion is trueor false. See Example 3.
26. 27. 28.
Solve each equation. See Examples 4 and 5.
33. 34. 35. 36.
37. 38. 39.
40. 41. 42.
Solve each problem. (Assume that all items are equally priced.) ( In Exercises 53–56, round
answers to the nearest tenth.) See Example 6.
43.If 16 candy bars cost $20.00, how much do 24 candy bars cost?
44.If 12 ring tones cost $30.00, how much do 8 ring tones cost?
3 m- 2
5
=
4 - m
3
2 p+ 7
3
=
p- 1
4
x+ 4
6
=
x+ 10
8
5 k+ 1
6
=
3 k- 2
3
2 r+ 8
4
=
3 r- 9
3
3 y- 2
5
=
6 y- 5
11
m
5
=
m- 2
2
z
2
=
z+ 1
3
x
4
=
12
30
x
24
=
15
16
20
100
=
z
80
49
56
=
z
8
x
6
=
18
4
k
4
=
175
20
=
1
18
1
3
6
=
1
10
1
2
5
27
160
=
18
110
120
82
=
7
10
4
12
=
7
21
5
35
=
8
56
136 CHAPTER 2 Linear Equations and Inequalities in One Variable
Size Price
4 lb $1.78
10 lb $4.29
Size Price
15 oz $3.43
34.5 oz $6.98
Size Price
16 oz $2.44
32 oz $2.98
48 oz $4.95
Size Price
2 oz $2.23
4 oz $2.49
8 oz $6.59
Size Price
16 oz $1.66
32 oz $2.59
64 oz $4.29
128 oz $6.49
Size Price
8.5 oz $0.99
16.9 oz $1.87
33.8 oz $2.49
50.7 oz $2.99
Size Price
14 oz $1.39
24 oz $1.55
36 oz $1.78
64 oz $3.99
Size Price
12 oz $1.05
18 oz $1.73
32 oz $1.84
48 oz $2.88
Size Price
87 oz $7.88
131 oz $10.98
263 oz $19.96
Size Price
15.5 oz $1.19
32 oz $1.69
48 oz $2.69
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