2019 AMC 12A Problems/Problem 2
Contents
Problem
Suppose is
of
. What percent of
is
?
Solution 1
Since , that means
. We multiply by 3 to get a
term, to yield
.
is
of
.
-- eric2020
Solution 2
WLOG, let . Then, we have
and
. Thus,
so
is
or
so the answer is
-21jzhang
Solution 3 (Like Solution 1)
. Multiply by 2 to obtain
. Since
, the answer is
.
-DBlack2021
Solution 4 (Like Solution 2)
WLOG, let . Then, we have
and
. Thus,
so
is
of
so the answer is
.
See Also
2019 AMC 12A (Problems • Answer Key • Resources) | |
Preceded by Problem 1 |
Followed by Problem 3 |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | |
All AMC 12 Problems and Solutions |
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