Basic Mathematics for College Students

88. MIXING FUELS The instructions on a can of oil
    intended to be added to lawn mower gasoline read as
    shown. Are these instructions correct? (Hint: There
    are 128 ounces in 1 gallon.)


89. MAKING COOKIES A recipe for chocolate chip
    cookies calls for cups of flour and 1 cup of sugar.
    The recipe will make dozen cookies. How many
    cups of flour will be needed to make 12 dozen
    cookies?

(^312)
(^114)

95. PAYCHECKS Billie earns $412 for a 40-hour week.
    If she missed 10 hours of work last week, how much
    did she get paid?


96. STAFFING A school board has determined that
    there should be 3 teachers for every 50 students.
    Complete the table by filling in the number of
    teachers needed at each school.


97. Explain the difference between a ratio and a
    proportion.


98. The following paragraph is from a book about
    dollhouses. What concept from this section is
    mentioned?
    Today, the internationally recognized scale for
    dollhouses and miniatures is This is
    small enough to be defined as a miniature, yet not
    too small for all details of decoration and
    furniture to be seen clearly.


99. Write a problem that could be solved using the
    following proportion.


100. Write a problem about a situation you encounter in
     your daily life that could be solved by using a
     proportion.

Perform each operation.

101.

102.

103.

104.

105.

106.

107.

108. 5.55(1.25)

35.113.99

17.18.4

3.8(7.9)

78.4753.3

48.817.372

29.534.412.8

7.46.78 35 0.008

REVIEW

Ounces of cashews

 Calories

4 

639



10

 x

Ounces of cashews 

Calories

1 in. 1 ft.

WRITING

442 Chapter 5 Ratio, Proportion, and Measurement

Goddard

Glenwood Junior Sellers

High High Elementary

Enrollment 2,700 1,900 850

Teachers

Recommended Gasoline Oil

50 to 1 6 gal 16 oz

fromCampus to Careers

Chef

90. MAKING BROWNIES

A recipe for brownies calls

for 4 eggs and cups of

flour. If the recipe makes

15 brownies, how many cups

of flour will be needed to

make 130 brownies?

(^112)

91. COMPUTER SPEED Using the Mathematica 3.0
    program, a Dell Dimension XPS R350 (Pentium II)
    computer can perform a set of 15 calculations in
    2.85 seconds. How long will it take the computer
    to perform 100 such calculations?


92. QUALITY CONTROL Out of a sample of
    500 men’s shirts, 17 were rejected because of
    crooked collars. How many crooked collars would
    you expect to find in a run of 15,000 shirts?


93. DOGS Refer to the illustration below. A Saint
    Bernard website lists the “ideal proportions for the
    height at the withersto body lengthas 5:6.” What is the
    ideal height at the withers for a Saint Bernard whose
    body length is inches?


94. MILEAGE Under normal conditions, a Hummer can
    travel 325 miles on a full tank (25 gallons) of diesel.
    How far can it travel on its auxiliary tank, which holds
    17 gallons of diesel?

Height

at withers

Length

of body

(^3712)
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