Two Student Groups at Enormous State University, the Choral Society

question 150

Short Answer

Two student groups at Enormous State University, the Choral Society and the Football Club, maintain files of term papers that they write and offer to students for research purposes. Some of these papers they use themselves in generating more papers. To avoid suspicion of plagiarism by faculty members (who seem to have astute memories), each paper is given to students or used by the clubs only once (no copies are kept). The number of papers that were used in the production of new papers last year is shown in the input-output table below. $$\begin{array} { | r | r | r | } \hline \text { To } & \text { Choral Society } & \text { Football Club } \\\hline \text { From Choral Society } & 40 & 10 \\\hline \text { Football Club } & 10 & 15 \\\hline \text { Total Output } & 100 & 200 \\\hline\end{array}$$
Given that 110 Choral Society papers and 330 Football Club papers will be used by students outside of these two clubs next year, how many new papers do the two clubs need to write
Choral Society __________, Football Club __________

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