 
 <prompt> ```There dey 4 more Muscovy ducks pass Cayugas, and 3 more pass twice as many Cayugas as Khaki Campbells. If total na 90 ducks, how many Muscovies dey?``` <response>: ```Make x represent di 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
Muscovy: 7+2(16)=39

Di final answer: 39.``` 