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Answers and Complete Explanations for the Mini-Test

Section II: Mathematics

1. D. 1 7 ⁄9 can be expressed as 16 ⁄9 (an improper fraction). Note that expressing the term as

ninths eliminates choices A, B, and C as possible answers. Changing choice D to fractions

expressed in ninths gives 5 ⁄3 = 15 ⁄9. 7 ⁄3 = 21 ⁄9, thus, 16 ⁄9 falls between the fractions listed in

choice D.

2. A. The cost per unit breaks down as follows:

A. $5/4 = $1.25

B. $6/5 = $1.20

C. $7/6 = approximately $1.17

D. $9/8 = approximately $1.13

E. $1.00

Thus, answer A is the most expensive.

3. D. To best approximate the answer to the problem, round off each number to a whole

number. This makes multiplication very simple: 8# 3= 24. Though answer choice A also

yields a rounded-off answer of 24, it is not the best way to approximate.

4. E. Because rent and food (30%) plus tuition and books (34%) totals 64%, Ali must have

36% left:

30% + 34% = 64%

100% - 64% = 36%

Now multiply $200 by 36%:

$200

#.36

$ 72.

00

So Ali has $72 left in his budget.

181

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