2020 AMC 12A Problems/Problem 1
Problem
Carlos took 
of a whole pie. Maria took one third of the remainder. What portion of the whole pie was left?
Solution
If Carlos took 70% of the pie, (100 - 70) = 30% must be remaining. After Maria takes 1/3 of the remaining 30%, (1 - 1/3) = 2/3 is left.
Therefore:
(3 / 10) * (2 / 3) = (2 / 10) = 20%, which is answer choice
If anyone could add the latex to the numbers / expressions that would be really helpful!
-Contributed by Awesome2.1
See Also
| 2020 AMC 12A (Problems • Answer Key • Resources) | |
| Preceded by First Problem |
Followed by Problem 2 |
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| All AMC 12 Problems and Solutions | |
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