2005 AMC 8 Problems/Problem 12
Problem
Big Al, the ape, ate 100 bananas from May 1 through May 5. Each day he ate six more bananas than on the previous day. How many bananas did Big Al eat on May 5?
Solution
There are days from May 1 to May 5. The number of bananas he eats each day is an arithmetic sequence. He eats
bananas on May 5, and
bananas on May 1. The sum of this arithmetic sequence is equal to
.
See Also
2005 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by Problem 11 |
Followed by Problem 13 | |
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