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In June , Mrs . Kunkel gave her English ...

In June , Mrs . Kunkel gave her English students 15 books to read over the summer . When classes resumed in September, she asked them what percentage of the books they had finished . Only one of the following values represents a posible percentage of books a student could have completed . Which one is it ?

A

`65%`

B

`68%`

C

`70%`

D

`80%`

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The correct Answer is:
D
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