Library / /252 of 356

, 2009

Algebra Difficulty 2.0 Junior Find the answer Canada

Lara ate $\frac{1}{4}$ of a pie and Ryan ate $\frac{3}{10}$ of the same pie. The next day Cassie ate $\frac{2}{3}$ of the pie that was left. What fraction of the original pie was not eaten?

(A) $\frac{9}{10}$ (B) $\frac{3}{10}$ (C) $\frac{7}{60}$ (D) $\frac{3}{20}$ (E) $\frac{1}{20}$

Want a route through all this instead of an archive? The track puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.

Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.