The Everton college store paid $1859 for an order of 49 calculators. The store paid $11 each for scietific calculators. The others, all graphing calculators, cost the store $55 eaach. How many of each type of calculator ws ordered? Please answer in detail so that I can see what is wrong and where. thank you.

Question

The Everton college store paid $1859 for an order of 49 calculators.  The store paid $11 each for scietific calculators. The others, all graphing calculators, cost the store $55 eaach. How many of each type of calculator ws ordered? Please answer in detail so that I can see what is wrong and where. thank you.

Anonymous · Answer

Let we have S scientific and G graphing calculators. Then S+G=49 11S+55G=1859 S=49-G 11(49-G)+55G=1859 S=49-G 44G=1859-539 G=30 S=19