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12.Practice.Tests.for.the.SAT_2015-2016_1128p

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Section 71<br />

Practice Test Two<br />

179<br />

8. At a certain school, if <strong>the</strong> ratio of teachers to<br />

students is 1 to 10, which of <strong>the</strong> following could be<br />

<strong>the</strong> total number of teachers and students?<br />

9.<br />

(A) 100<br />

(B) 121<br />

(C) 144<br />

(D) 222<br />

(E) 1,011<br />

What is 60 percent of20y?<br />

(A) 1.2y<br />

(B) lOy<br />

(C) 12y<br />

(D)<br />

15y<br />

(E) 120y<br />

10. In a certain neighborhood, <strong>the</strong> number of cats<br />

is inversely proportional to <strong>the</strong> number of dogs.<br />

At one point, <strong>the</strong>re were 10 cats and 50 dogs in<br />

<strong>the</strong> neighborhood. If today <strong>the</strong>re are 20 dogs<br />

in <strong>the</strong> neighborhood, how many cats are in <strong>the</strong><br />

neighborhood?<br />

(A) 4<br />

(B) 8<br />

(C) 15<br />

(D) 20<br />

(E) 25<br />

11. In a display consisting of one row of coins, <strong>the</strong>re<br />

are an equal number of silver and gold coins.<br />

Which of <strong>the</strong> following must be true?<br />

(A) The first coin and <strong>the</strong> last coin are different<br />

types.<br />

(B) There are two adjacent gold coins in a row.<br />

(C) There are two adjacent silver coins in a row.<br />

(D) If <strong>the</strong>re are two adjacent silver coins, <strong>the</strong>re are<br />

also two adjacent gold coins.<br />

(E) If <strong>the</strong> last two coins are gold, <strong>the</strong>re are at least<br />

two adjacent silver coins.<br />

12. Ifx=-3 andy= 9, what is <strong>the</strong> value of l\Jxi-y I ?<br />

(A) -12<br />

(B) 0<br />

(C) 6<br />

(D) 12<br />

(E) 36<br />

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