Question

A vendor 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

Answer 1

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
 Answer:
 104 pretzels
 153 drinks