156 cupcakes = N + H + V
V = Virgil's Cupcakes
H = Haley's Cupcakes
N = Nathaniel's Cupcakes
H = 156 - 94
H = 62
Haley made 62 cupcakes.
94 = N+V
N = 156 - h
156 - 62 = 94
Nathaneal made 94 cupcakes.
Virgil made 0 cupcakes.
You see, Haley and Nathaneal made 156 cupcakes, but that is also the total amount of cupcakes. Because it said Virgle and Nathaneal made 94 cupcakes, that can only mean Nathaneal made the 94 alone. Which also means Haley made the 62 cupcakes alone.