SOLUTION: 29. A bookstore can purchase several calculators for a total cost of $120. If each calculator cost $1 less, the bookstore could purchase 10 additional calculators at the same total
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Question 119997This question is from textbook Beginning and intermediate Algebra
: 29. A bookstore can purchase several calculators for a total cost of $120. If each calculator cost $1 less, the bookstore could purchase 10 additional calculators at the same total cost. How many calculators can be purchased at the regular price?
This question is from textbook Beginning and intermediate Algebra
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the cost of each calculator
Let = number of calculators bought
In words:
Total cost = ( cost of each calculator ) x ( number of calculators bought )
also given is
Substitute for
complete the square
Thirty calculators can be bought at the regular price answer
check:
This says the regular price is $4
OK
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