Question 1097930: Elsa bought some books for
$5
each and received a discount of
$7
off of her total purchase. She spent
$58
after the discount. How many books did she buy?
(a)Write an equation that could be used to answer the question above. First, choose the appropriate form. Then, fill in the blanks with the numbers
5
,
7
, and
58
. Let
b
represent the number of books.
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! your question is:
Elsa bought some books for $5 each and received a discount of $7 off of her total purchase.
She spent $58 after the discount.
How many books did she buy?
Let b represent the number of books.
the equation will be:
5 * b - 7 = 58
add 7 to both sides of the equation to get 5 * b = 65.
divide both sides of the equation by 5 to get b = 13.
she bought 13 books at 5 dollars apiece.
the total cost was 65 dollars without the discount.
she gets a 7 dollar discount off of 65 dollars, so she paid a total of 58 dollars after the discount.
solution is that she bought 13 books.
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