Avendor sells pretzels and drinks at a corner stand. he charges $2.25 for a pretzel and $1.50 for a drink. one day, the vendor made a total of $463.50 by selling a total of 257 items. is this the right answer? $2.25p + $1.50d = $463.50

For this case, the first thing we must do is define variables:
 p: number of pretzels
 d: number of drinks
 We now write the system of equations:
 2.25p + 1.50d = 463.50
 p + d = 257
 Solving the system we have:
 d = 153
 p = 104
 
 104 pretzels
 153 drinks