An electronics store had a special sale on two different models of calculators. The more high-tech model sold for $33.04 and the older model sold for $16.88. All together, 29 calculators were sold. Total sales came out to $731.92. Which system of equations can be used to determine how many high-tech models were sold, x, and how many older models were sold, y?

Question

anonymous · Answer

first of all we know that 
x+y=29
and
(33.04)x+(16.88)y=731.92
so there you go rest is algebra