Jack had to complete an assignment within the given deadline. So, he decided to write 1000 words per day. But, he could write only 700 words per day at first, then he realized that he needs to write 8500 more words during the last 7 days before the deadline. What is the number of days, where he could write only 700 words per day?
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- A.3
B.4
C.5
D.6
E.7
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