Carol has 3 children. the youngest child is 4 years younger than the middle child. the oldest child is 6 years older than the middle child. the youngest child is 8. the sum of their ages is 12 years less than carol's age. how old is carol?

let c = carol's age; y = youngest child.

a) c=y+(y+4)+(y+4+6)+12
b) c=y-(y--4-6)-12
c) c+12=y+(y+4)+(y+4+6)
d) c=y+(y-4)+(y-4-6)+12