Vacation BooksMath brain teasers require computations to solve.
Morgan came home from her vacation at Grandma's with 6 books. While she was away she purchased 3 books at the book store and got 1 book as a gift. During her stay at Grandma's, she also gave her cousin the 2 books that she finished.
How many books did she take with her when she left for her trip?
AnswerMorgan started with 4 books.
This is one way to work backwards:
Morgan returned with 6 books.
She gave away 2 of the books that she had.
So add those two books back to her total.
6 + 2 = 8
She had received 1 book that she had not brought with her.
So subtract that book from her total.
8 - 1 = 7
She bought 3 books that she had not brought with her.
So subtract those books from her total.
7 - 3 = 4
She must have left for vacation with 4 books.
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