Difference between revisions of "2011 AMC 12A Problems/Problem 5"
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− | Last summer <math>30%</math> of the birds living on Town Lake were geese, <math>25%</math> were swans, <math>10%</math> were herons, and <math>35%</math> were ducks. What percent of the birds that were not swans were geese? | + | Last summer <math>30\%</math> of the birds living on Town Lake were geese, <math>25\%</math> were swans, <math>10\%</math> were herons, and <math>35\%</math> were ducks. What percent of the birds that were not swans were geese? |
<math> | <math> |
Revision as of 12:32, 19 April 2015
Problem
Last summer of the birds living on Town Lake were geese,
were swans,
were herons, and
were ducks. What percent of the birds that were not swans were geese?
Solution
To simplify the problem, let us say that there were a total of birds. The number of birds that are not swans is
. The number of geese is
. Therefore the percentage is just
See also
2011 AMC 12A (Problems • Answer Key • Resources) | |
Preceded by Problem 4 |
Followed by Problem 6 |
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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