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MAA AMC
AMC 12/AHSME
1980 AMC 12/AHSME
3
Ratios
Ratios
Source:
December 30, 2005
ratio
Problem Statement
If the ratio of
2
x
−
y
2x-y
2
x
−
y
to
x
+
y
x+y
x
+
y
is
2
3
\frac{2}{3}
3
2
, what is the ratio of
x
x
x
to
y
y
y
?
(A)
1
5
(B)
4
5
(C)
1
(D)
6
5
(E)
5
4
\text{(A)} \ \frac{1}{5} \qquad \text{(B)} \ \frac{4}{5} \qquad \text{(C)} \ 1 \qquad \text{(D)} \ \frac{6}{5} \qquad \text{(E)} \ \frac{5}{4}
(A)
5
1
(B)
5
4
(C)
1
(D)
5
6
(E)
4
5
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