Basic Mathematics for College Students

90. ELECTIONS The final election returns for a city
    bond measure are shown below.
    a. Find the total number of votes cast.
    b. Find two-thirds of the total number of votes
    cast.
    c. Did the bond measure pass?


91. COOKING Use the recipe below, along with the
    concept of multiplication of fractions, to find how
    much sugar and how much molasses are needed to
    make one dozencookies. (Hint:this recipe is for two
    dozencookies.)


92. THE EARTH’S SURFACE The surface of Earth
    covers an area of approximately 196,800,000 square
    miles. About of that area is covered by water. Find
    the number of square miles of the surface covered by
    water.


93. BOTANY In an experiment, monthly growth rates of
    three types of plants doubled when nitrogen was
    added to the soil. Complete the graph by drawing the
    improved growth rate bar next to each normal growth
    rate bar.

Normal Nitrogen

House plants

Normal Nitrogen

Tomato plants

Normal Nitrogen

Shrubs

1

Inch Growth Rate: June

1/6

1/3

1/2

2/3

5/6

3

4

Gingerbread Cookies

cup sugar

2 cups flour

teaspoon allspice

cup dark molasses

Makes two dozen gingerbread cookies.

(^3) –
4
(^1) –
8
(^1) –
3
cup water
cup shortening
teaspoon salt
teaspoon ginger
(^1) –
2
(^2) –
3
(^1) –
4
(^3) –
4
125,599 62,801
100% of the precincts reporting
Fire–Police–Paramedics General Obligation Bonds
(Requires two-thirds vote)

94. ICEBERGS About of the volume of an iceberg is
    below the water line.
    a. What fraction of the volume of an iceberg is above
    the water line?

b. Suppose an iceberg has a total volume of

18,700 cubic meters. What is the volume of

the part of the iceberg that is above the water

line?

95. KITCHEN DESIGN Find the area of the kitchen
    work triangleformed by the paths between the
    refrigerator, the range, and the sink shown below.


96. STARS AND STRIPES The illustration shows a
    folded U.S. flag. When it is placed on a table as part of
    an exhibit, how much area will it occupy?

11 in.

22 in.

Refrigerator

Range

Sink

9 ft

6 ft

© Ralph A. Clevenger/Corbis

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3.2 Multiplying Fractions 231