1. Thanksgiving Pie Problem

2. Bruce is have a Thanksgiving Day Feast
Bruce is have a Thanksgiving Day Feast. Bruce’s Dad would like Pumpkin Pie and Pecan Pie for desert. If Pumpkin pies cost $7.99 and Pecan pies cost $14.99 and Bruce bought 25 pies for $ before taxes. How Pumpkin and how many Pecan did he purchase?

3. What is the equation? Total of Money Total Amount of Pies
Let X = Pecan = 14.99
Let Y = Pumpkin = 7.99
Total =
14.99x y =
Let X = Pecan
Let Y = Pumpkin
Total = 25
x + y = 25

4. Tables for the solution
Pecan Pie ($)
Pumpkin Pie ($)
33.76 1
31.86 2
30.01 3
28.13 4
26.26 5
24.38 6
22.50 7
20.63 8
18.75 9
16.88 10 15
Pecan Pie (#)
Pumpkin Pie (#) 25 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15

5. Graph

6. Solution
Since the Pecan pie is and pumpkin pie is 7.99 then Bruce bought 10 pecan pies and 15 pumpkin pies for his thanksgiving feast. This combination gives Bruce the amount of $ and the total of 25 pies.

7. Solving by Elimination
Check by Substitution
X + Y = 25
(10) + (15) = 25
25 = 25