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Jack had to complete an assignment within the given deadline. So, he decided to write 1000 words per day. But, he could

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by VJesus12 » Sun Jan 17, 2021 4:33 am

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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 wrote only 700 words per day?

A. 3
B. 4
C. 5
D. 7
E. 12

Answer: C

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Re: Jack had to complete an assignment within the given deadline. So, he decided to write 1000 words per day. But, he co

by raidamaisa » Thu Feb 16, 2023 11:25 pm
I am looking forward to the answer.
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Re: Jack had to complete an assignment within the given deadline. So, he decided to write 1000 words per day. But, he co

by Scott@TargetTestPrep » Thu Mar 02, 2023 6:57 am
VJesus12 wrote: ↑
Sun Jan 17, 2021 4:33 am
 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 wrote only 700 words per day?

A. 3
B. 4
C. 5
D. 7
E. 12

Answer: C

Solution:

Let n = the number of days on which he wrote only 700 words per day. Thus, we see that (n + 7) is the total number of days for the entire assignment. So we can create the equation:

700n + 8500 = 1000(n + 7)

7n + 85 = 10(n + 7)

7n + 85 = 10n + 70

15 = 3n

5 = n

Answer: C

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