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A newspaper vendor sold three types of papers. Each day from Monday to Friday he sold 30 copies of paper A, 20 copies of paper B and 10 copies of paper. For the remaining two days he sold a total of 40 copies of paper A, 20 copies of paper B and 15 copies of paper. How many copies of newspapers did he sell in one week?
A. 135
B. 495
C. 450
D. 375