Question

The proportion of books sold by Sita on Monday to those on Tuesday stands at 8:5. Sita's book sales on Wednesday exceed Tuesday's by 34, while Thursday's sales are 16 less than Monday's. If the ratio of books sold on Wednesday to those on Thursday is 61:80, then calculate the quantity of books sold on Monday.

A 627
B 852
C 400
D 336
E none of these
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