Asked by ezekiel

Mark has 312 books in his bookcases. He has 11 times as many fiction books as nonfiction books. How many fiction books does Mark have. My answer is Mark have 308 fiction books and 4 nonfiction books.
Answered by Ms. Sue
Let's check your answer.
If he has 4 nonfiction books -- then we multiply 4 * 11 = 44 fiction. Oops! That doesn't work, does it?

How about this way? Let n = nonfiction

n + 11n = 312

12n = 312

n = 26 nonfiction

Does this answer check out?

Answered by ezekiel
Ok the answer is 312 divide by 26 = 186 fiction books.
Answered by Ms. Sue
Nope.

312 / 26 = 12 >> not 186

26 + 186 is NOT 312.

Why did you divide?

Answered by ezekiel
oops sorry the answer is 26 * 11 = 286 fiction books.
Answered by Ms. Sue
Yay! You're right!
Answered by ezekiel
Thanks Ms. Sue for your help.
Answered by Ms. Sue
You're welcome, Ezekiel.
Answered by precious
26
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