Homework Help: algebra 1

Posted by spirit73 on Monday, September 28, 2009 at 3:05pm.

the everton college store paid $1553 for an order of 42 calculators. the store paid $9 for each scientific calculator. the others, all graphing calculators, cost the store $56 each. how many of each trupe of calculator was ordered?

the store ordered:
how many scientfic calculators?

graphing calculators?

algebra 1 - MathMate, Monday, September 28, 2009 at 6:26pm
Let
S = number of scientific calculators

"an order of 42 calculators."
42-S = number of graphing calculators.

"the store paid $9 for each scientific calculator... graphing calculators, cost the store $56 each"

Total cost
= $9*S + $56*(42-S)
Since the total cost is $1553, solve for S in
$1553 = $9*S + $56*(42-S)

Answer this Question

Related Questions

algebra 1 - I still don't understand can someone help me? the everton ...
Algebra 1 - The Everton college store paid $1668 for an order of 44 calculators...
Algebra 1 - The Everton college store paid $1668 for an order of 44 calculators...
algebra - The Everton College store paid $1926 for an order of 50 calculators. ...
Algebra 1 - The Everton college store paid 1519 for an order of 41 calculators. ...
Algebra 1 - The Everton college store paid 1519 for an order of 41 calculators. ...
Pre algebra - The Everton college store paid 1532 dollars for an order of42 ...
Algebra 1 - The everton college store paid $1668 for an order of 44 calculators...
please help - The Everton college store paid $1859 for an order of 49 ...
math - solve by substitution method. 5m+n=36 m-5n=54 the everton college store ...

For Further Reading

First Name:
School Subject:
Answer: