Ratios and Comparisons
ISEE Upper Level Quantitative Reasoning · Flashcards · Recall
ISEE UPPER LEVEL QUANTITATIVE REASONING · FLASHCARDS
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QUESTION
What does the ratio
a
:
b
a:b
a
:
b
mean in fraction form?
QUESTION
What is the cross-multiplication condition for
a
b
=
c
d
\frac{a}{b}=\frac{c}{d}
b
a
=
d
c
?
QUESTION
What does the ratio
a
:
b
a:b
a
:
b
mean in fraction form?
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ANSWER
a
b
\frac{a}{b}
b
a
. The ratio
a
:
b
a:b
a
:
b
expresses the comparison of
a
a
a
to
b
b
b
as the fraction
a
b
\frac{a}{b}
b
a
.
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