Problem:
A jar contains five different colors of gum drops: are blue, are brown, are red, are yellow, and the other gum drops are green. If half of the blue gum drops are replaced by brown gum drops, how many of the gum drops will be brown?
Answer Choices:
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B.
C.
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E.
Solution:
The green gum drops are of the total gum drops, so there are gum drops in the jar. The number of blue gum drops is of , which is , and the number of brown gum drops is of , which is . After half the blue gum drops are replaced by brown ones, the number of brown gum drops is .
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions