there are 81 students in green t-shirts and 54 in white t-shirts and 27 in orange t-shirts. the teacher is planning to arrange t
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The solution to the system of equations is (x, y) = (10, 14), where x is the number of 3-point questions and y is the number of 5-point questions. The appropriate choice is ...
The test contains 10 three-point questions and 14 five-point questions. (2nd selection)
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