The number of popcorns sold is 88.
Two equations can be derived from the question:
a + b = 172 equation 1
1.10a + 2.35b = $294.20 equation 2
Where:
a = number of popcorns sold
b = number of nachos sold
In order to determine the number of popcorns sold, take the following steps:
Multiply equation 1 by 2.35
2.35a + 2.35b = 404.20 equation 3
Subtract equation 2 from 3
110 = 1.25a
Divide both sides by 1.25
a = 88
To learn more about simultaneous equations, please check: https://brainly.com/question/25875552