Jaime is twice as old as maceo. Kara is 4 years younger than maceo. the sum of their ages is 80. how old is each person

Answer 1

j=2m

k=m-4

j+m+k=80

2m+m-4+m=80

4m=80+4

m=84/4=21 years old

j= 42

k= 17