To answer, let's set up a system of equations:
For Duncan:
-6(14) + b = 25, where b is his starting number
For George:
8(14) + c = 25, where c is his starting number
Solving for b:
-6(14) + b = 25
-84 + b = 25 Add 84 to both sides
b = 109
Solving for c
8(14) + c = 25
112 + c = 25 Subtract 112 from both sides
c = -87
Duncan's number was 109, and George's number was -87
Their sum is:
109 + (-87) = 22
Answer is 22
