Answer:
Total money he had left=629.85
Explanation:
We can express Phil's earnings from pizza sales as;
Total earnings from pizza sales=(price per slice×number of pizza slices sold)+(price per whole pizza×number of whole pizzas sold)
where;
Price per slice of pizza=1.75
Number of pizza slices sold=76 slices
Price per whole pizza=9.50 whole pizzas
Number of whole pizzas sold=64
Replacing in the expression above;
Total earnings from pizza sales=(1.75×76)+(9.5×64)=741
Total money he had left=Total earnings from pizza sales-15% of Total earnings
where;
Total earnings from pizzas ales=741
15% of Total earnings=(15/100)×741=111.15
Replacing;
Total money he had left=(741-111.15)=629.85