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Word of the Day
obtrusive
Definition: (adjective) overly prominent.
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Math Teaser
Problem
 If  
5 y  +  3
3
 =  4 y  -  1  , 
  what is the value of  y  ? 
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SAT* Tip of the Day
So What?
You can raise your score by answering fewer questions.
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SAT: Multiple-Choice Question #10

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Question:
 What is 16 percent of 
7
9
 of 225? 


Choices:
A. 28
B. 36
C. 40
D. 108
E. 175

 Let's break this question down carefully. 
7
9
 of  225  is 
7
9
 ×  225  and 
 16 percent of this quantity is 
16
100
 ×  ( 
7
9
 ×  225  )  = 
16  ×  7  ×  225
100  ×  9
  
 Simplifying, we get: 

16  ×  7  ×  225
100  ×  9
 = 
4  ×  4  ×  7  ×  25  ×  9
100  ×  9
 = 
4  ×  25
100
 × 
9
9
 × 
4  ×  7
1
 =  1  ×  1  ×  28
 =  28

Answer choice (A) is correct.
  
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