candygal79 wrote:If a=2/7 b and b=7/3 c then what percent of a is c?
A)50 %
B) 57 1/7 %
C) 66 2/3 %
D) 125%
E)150%
Thanks
Let c = 3.
Then:
b = (7/3)c = (7/3)(3) = 7.
a = (2/7)b = (2/7)(7) = 2.
Since a=2 and c=3, the question stem becomes:
What percent of 2 is 3?
Translate the resulting question into math, word by word.
The words in the question stem translate as follows:
what percent --> x/100.
of --> MULTIPLY.
is --> =.
Translating the resulting question into math, we get:
(x/100) * a = c
(x/100) * 2 = 3
2x = 300
x = 150.
The correct answer is
E.
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