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Mathematics>Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
A geologist has 10 rocks of equal weight. If 6 rocks and a 10-ounce weight balance on a scale with 4 rocks and a 22-ounce weight, what is the weight, in ounces, of one of these rocks?
(A) 4
(B) 5
(C) 6
(D) 7
(E) 8
