GRE-Math-Questions-to-Know-by-Test-Day-2nd-Edition_pag132

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Multiple-Choice Questions with One or More Correct Answers ‹ 123
 403. Which of the following pairs of ratios could form a true proportion? Indicate 
all such pairs.
 (A) 19
15
, 38
25
 
 (B) 1.6
2.5
, 64
100
 
 (C) 4
3
,10
5
 
 (D) 14
18
,18
14
 
 (E) 3.6
3
,18
15
 
 404. Which of the following expressions is equivalent to 12 1
2
% of 400? Indicate 
all such expressions.
 (A) 125% of 40 
 (B) 33 1
3
% of 150 
 (C) 2.5% of 2000 
 (D) 1
8
% of 4000 
 (E) 1
2
% of 10,000 
 (F) 0.1% of 500 
 405. Triangle ABC is similar to triangle DEF. Triangle ABC has sides 4, 6, and 8. 
Which could be the corresponding sides of triangle DEF ? Indicate all that 
apply.
 (A) 1, 1.5, and 2
 (B) 1.5, 2.25, and 3
 (C) 6, 9, and 12
 (D) 8, 12, and 16
 (E) 10, 15, and 20
 406. The ratio of the perimeters of two similar polygons is 5:9. Which could be 
the areas of the two polygons? Indicate all that apply.
 (A) 20 and 45
 (B) 55 and 99
 (C) 25 and 81
 (D) 100 and 324
 (E) 200 and 360
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