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February 28, 2015

February 28, 2015

Posted by **Mack** on Monday, August 27, 2007 at 10:03pm.

The answer book says: C is the answer. The correct answer should yield a ratio of sea lions to Penguins of 4 to 11, so try out choice C. If there are 48 sea lions, there are 48+84=132 penguins, so the ratio of sea lions to penguins is 48/132=4/11, which is just what we want.

How did they know to pick choice C??

- S.A.T Math -
**brie**, Monday, August 27, 2007 at 10:11pmwait:

132 penguins 4

- = -

48 sea lions 11

i don't think the 2 fractions = eachother(11 doesn't go into 48

- S.A.T Math -
**brie**, Monday, August 27, 2007 at 10:12pmwait no im wrong ignore thelast post

- S.A.T Math -
**brie**, Monday, August 27, 2007 at 10:13pmc IS right because 48/132=4/11:

48 divided by 4=12

132 divided by 11=12

- S.A.T Math -
**DrBob222**, Monday, August 27, 2007 at 10:42pmright. Here is they knew to pick those numbers.

Let number sea lions = S

let number penquins = P

We know two things.

S/P = 4/11 AND

S+84=P

Two equations with two unknowns. Solve simultaneously for S and P.

S is 48 and P is 132

and 48/132 is in the ratio of 4/11

- S.A.T Math -
**SraJMcGin**, Monday, August 27, 2007 at 11:24pmThank you for using the Jiskha Homework Help Forum. Since you are considering the SAT Math Exam, you might like to bookmark/save the following sites:

1. www.4tests.com/exams/examdetail.asp?eid=6

2. http://www.math.com/students/testprep.html

3. http://math.rice.edu/~lanius/Geom/quiza.html

4. http://www.majortests.com/sat/math-skills.php

5. http://www.majortests.com/sat/problem-solving.php (part II)

6. http://www.algebra.com/testing/scripts/st.mpl

7. http://www.syvum.com/sat/

8. http://www.saab.org/saab_org.cgi

9. http://www.collegeboard.com/student/testing/sat/prep_one/math_review.html

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