Monday

July 28, 2014

July 28, 2014

Posted by **spirit73** on Tuesday, September 29, 2009 at 8:51am.

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 -
**Reiny**, Tuesday, September 29, 2009 at 9:08amhow about...

let the number of scientific calculators be x

then the number of graphing calc's is 42-x

then 9x + 56(42-x) = 1553

9x + 2352 - 56x = 1553

-47x = -799

x = 17

42-x = 25

So they bought 17 scientific and 25 graphing types.

check : 17(9) + 25(56) = 1553

**Related Questions**

algebra 1 - the everton college store paid $1553 for an order of 42 calculators...

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 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. ...

algebra - The Everton College store paid $1926 for an order of 50 calculators. ...

Algebra 1 - The everton college store paid $1668 for an order of 44 calculators...

Pre algebra - The Everton college store paid 1532 dollars for an order of42 ...

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 ...