CEMC Fermat, 1999

Number theory Difficulty 1.0 Junior Find the answer Canada

In Circle Land, the numbers 207 and 4520 are shown in a diagram using nested circles with numbers inside representing place values, as illustrated. In Circle Land, what number does the following diagram represent?

(A) $30\,105$ (B) $30\,150$ (C) $3105$ (D) $3015$ (E) $315$

Figure for this problem

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