2016 AMC 8 Problems/Problem 3
Contents
Problem
Four students take an exam. Three of their scores are and . If the average of their four scores is , then what is the remaining score?
Solutions
Solution 1
Let be the remaining student's score. We know that the average, 70, is equal to . We can use basic algebra to solve for : giving us the answer of .
Solution 2
Since is more than , and is more than , for to be the average, the other number must be less than , or .
Video Solution (THINKING CREATIVELY!!!)
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Video Solution
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Video Solution by OmegaLearn
https://youtu.be/51K3uCzntWs?t=772
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See Also
2016 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by Problem 2 |
Followed by Problem 4 | |
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 AJHSME/AMC 8 Problems and Solutions |
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions.