Question 1043935
Mia is twice as old as Allison. 4 years from now the sum of their ages will be 23. How old is Mia?

   Soltion

let Allison age be x
from your question,
mia=2x

4 years from now,
Allison=x+4 
mia=2x+4 

but the sum of their ages will be 23,i.e
(x+4)+(2x+4)=23
3x+8=23
3x=23-8
3x=21
x=7
mia's age=2*7 
     14yrs
  
 Timnewman.