Question

A mother had a girl named Mia when she was 18. Four years later, when she was twenty two, she had triplets. Then a year later, at 23, she had another child. How old is the mother when the triplets are 12, the single child is 11 and the original child Mia is 16?

Answer 1

She was 22 when she had triplets
so if the triplets are 12 then just add 
22+12=34
or when she had Mia she was 18
if Mia is 16 then add
18+16=34
Also, she had another child at 23
if the child is 11 then add
23+11=34
Hope it helps! :)

Answer 2

I believe the mom would be 34 years old!