SOLUTION: Three ducks and two ducklings weigh 32kg. Four ducks and three ducklings weigh 44kg. All ducks weigh the same and all ducklings weigh the same. What is the weight of two ducks a

Question 192589: Three ducks and two ducklings weigh 32kg. Four ducks and three ducklings weigh 44kg. All ducks weigh the same and all ducklings weigh the same. What is the weight of two ducks and one duckling together?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
3D+2d=32 multiply by -4
4D+3d=44 multiply by 3 & add them
-12D-8d=-128
12D+9d=132
-------------------
d=4 kg. for each duckling.
3D+2*4=32
3D+8=32
3D=32-8
3D=24
D=24/3
D=8 kg. for each Duck.
Proof:
4*8+3*4=44
32+12=44
44=44

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