Proportional Relationships
ISEE Upper Level Quantitative Reasoning · Flashcards
ISEE UPPER LEVEL QUANTITATIVE REASONING · FLASHCARDS
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QUESTION
What is the standard equation for a direct variation between
y
y
y
and
x
x
x
?
QUESTION
What is the value of
x
x
x
if $ \frac{3}{5} = \frac{x}{20}$?
QUESTION
Identify the value of
x
x
x
that makes the ratios proportional:
9
:
12
=
x
:
20
9:12 = x:20
9
:
12
=
x
:
20
.
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ANSWER
x
=
15
x = 15
x
=
15
. Simplify 9:12 to 3:4, then multiply 20 by
3
4
\frac{3}{4}
4
3
to find
x
x
x
.
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