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2 equation, 2 unknowns.
Simultaneous equation solution.
Next
Yup that was what I got to
CBA to actually work it out
2 equation, 2 unknowns.
Simultaneous equation solution.
Next
Yup that was what I got to
CBA to actually work it out
It's bigger on the inside.
Does it have an outside??
Yup that was what I got to
CBA to actually work it out
b = d + 24
36 = b + d
36 = d + 24 + d
36 = 2d + 24
36 - 24 = 2d
12 = 2d
duck = 6, barrel = 30
Solution by substitution. Could be more elegantly composed
b = d + 24
b = 36 - d
36 - d = 24 + d
36 - 24 = 2d
12 = 2d
ergo d = 6
All the question asked was the height of the duck.