... is of
another:
What percentage of 75 is 15?
Cross multiply:
15( 100) = ( 75) (x)
1 ,50 0 = 75x
ᎏ
1,
7
5
5
00
ᎏ
=
ᎏ
7
7
5
5
x
ᎏ
20 = x Therefore, 20% of 75 is 15.
Ratio and Variation
A ratio is a ... SAT MATH SECTION–
157
56 58 SAT2006[04](fin).qx 11/21/ 05 6:44 PM Page 157
34. If 5% of a number is 20, what would 50 % of that
number be?
a. 250
b. 100
c. 200
d. 400
e. 50 0
35...