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- 2015 AMC 12B Problems/Problem 23
- User talk:Ceojun88sh
- Gmass
- 2023 AMC 12B Problems/Problem 19
- GMAAS
- User:Tx88team
- 2021 AMC 10A Problems/Problem 22
- User:Oakvilleprestige
- 2021 Fall AMC 10A Problems/Problem 19
- 1983 AIME Problems/Problem 2
- 2022 AMC 10B Problems/Problem 8
- 2024 AMC 8 Problems/Problem 19
- Points $A$, $B$, $C$, and $D$ lie on a line, in that order. If $AB=2$ units, $BC=5$ units and $AD=14$ units, what is the ratio of $AC$ to $BD$? Express your answer as a common fraction.