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Mathematics 12 Online
OpenStudy (anonymous):

a store paid $1967 for an order of 51 calculators. the store paid $10 for each scientific calculator.the others cost the store $57 each.how many of each type of calculator was ordered

OpenStudy (anonymous):

\[1967=10x+57(51-x)\] is our equation

OpenStudy (anonymous):

20 at $10 and the rest at $57

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