Each pirate wants his own treasure chest, but there is 1 more pirate than there are treasure chests. If the pirates would agree to pair up so each pirate shares a treasure chest with another pirate, then 1 treasure chest would not be assigned to any pirate. How many treasure chests are there?
A.
2
B.
5
C.
3
D.
4
Exam No：2018 First Round Grades 10-12 Year：2018 Question No：1
Answer:
C
Knowledge points:
G10-12 - Algebra - Systems of Linear Equations (Manipulation & Modeling)
Solution:
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