the answer is ..................8
Two ducks and two dogs have a total of how many legs?
Two ducks have a total of eight legs, with each duck having four legs each.
Ducks have 2 legs.
That would be 20 legs in total.
12
ducks have 2 legs ducks have 2 legs
13 pigs and 1 duck.
20 legs in total Sid http://digital-dexterity.com/
If all were ducks there would be ony 36 legs. The extra 14 legs must represent 7 horses, which with 11 ducks would have 7 x 4 + 11 x 2 ie 28 + 22 ie 50 legs as stated.
Let x = ducks and y = pigs x (ducks) + y (pigs) = 22 (total animals) 2x (legs of ducks) + 4y (legs of pigs) = 56 (total legs) Multiply the first part (the total animals) by two 2x + 2y = 44 then subtract the two problems 2y = 12 then y = 6 go back to the original x + 6 = 22 then x = 16 16 ducks (32 legs) + 6 pigs (24 legs) = 22 animals (56 legs)
There are 12 pigs 15 ducks have 30 legs 102 legs - 30 legs = 72 legs. Pigs have four legs, ducks have two legs 72 legs divided by 6 = 12 12 ducks having 24 legs 12 pigs having 48 legs 24 + 24 + 30 = 102
There are 3 ducks in total.