Problema Solution
the everton college store paid $1594 for an order of 41 calculators. the store paid $9 for each scientific calculator. the others, all graphing calculators, cost the store $58 each. how many of each type of calculator was ordered?
Answer provided by our tutors
LET X BE TYPE OF EACH SCIENTIFIC CALCULATOR
LET Y BE EACH TYPE OF GRAPHICAL CALCULATORS
9X +58Y= 1594-------------------1
X+Y= 41----------------------2
MULTIPLY SECOND EQUATION BY 9
9X +9Y =369-----------------------3
SUBTRACT 1 FROM 3
49Y= 1225
Y=25
X= 41-25=16
HENCE 16 SCENTIFIC CALCULATORS WERE OREDERD
AND 25 the others, all graphing calculators WERE OREDERD