Let x represent the number of Khaki Campbell ducks.

Cayugas:3+2x

Muscovies:4+(3+2x)=7+2x

Total: x+3+2x+7+2x=90

5x+10=90

5x=80

x=<<16=16>>16

Muscovy: 7+2(16)=39

# Answer

39
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<|im_start|>user
There are 4 more Muscovy ducks than Cayugas, and 3 more than twice as many Cayugas as Khaki Campbells. If there are 90 ducks total, how many Muscovies are there?
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user
39
There are 4 more Muscovy ducks than Cayugas, and 3 more than twice as many Cayugas as Khaki Campbells. If there are 90 ducks total, how many Muscovies are there?
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