Problema Solution

Grandma's bakery sells single crust pies for $6.99 and double crust pies for $10.99. The total number of pies sold on a busy Friday was 36. If the amount collected for all the pies that day was $331.64, how many of each type were sold?

Answer provided by our tutors

let


x = the number of single crust pies


y = the number of double crust pies


The total number of pies sold on a busy Friday was 36:


x + y = 36


If the amount collected for all the pies that day was $331.64:


6.99x + 10.99y = 331.64


by solving the system of equations:


x + y = 36


6.99x + 10.99y = 331.64


we find:


x = 16 single crust pies


y = 20 double crust pies


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there were 16 single crust pies and 20 double crust pies sold.