2000 AMC 12 Problems/Problem 3

Problem

Each day, Jenny ate $20%$ (Error compiling LaTeX. Unknown error_msg) of the jellybeans that were in her jar at the beginning of that day. At the end of the second day, remained. How many jellybeans were in the jar originally?

Solution

Since Jenny eats $20%$ (Error compiling LaTeX. Unknown error_msg) of her jelly beans per day, $80%=\frac{4}{5}$ (Error compiling LaTeX. Unknown error_msg) of her jelly beans remain after one day.

Let be the number of jelly beans in the jar originally.

See also

• 2000 AMC 12 Problems
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