posted by akaray on .
The Everton College store paid $1926 for an order of 50 calculators. The store paid $10 for each scientific calculator. the others, all graphing calculators, cost the store $56 each. How many of each type of calculator was ordered? scientific? graphing?
Let G=number of graphing calculators, then
$10*(50-G)+$56*G = $1926
Solve for G and substitute back in formula to check answer.