Question 384385
Let x = yoshi's sister's age.
yoshi's age is x + 12.


6 years from now the sum of their age will be 32.


6 years from now yoshi's sister will be x + 6 years old.


6 years from now yoshi will be (x + 12) + 6 years old.


The sum of their ages will be x + 6 + (x + 12) + 6 = 2*x + 24 = 32


You have 2*x + 24 = 32


Solve for x to get x = 4


yoshi's sister's age today is 4.
in 6 years yoshi's sister will be 10 years old.


yoshi is 16 years old today.
in 6 years, yoshi will be 22 years old.


10 + 22 = 32


answer to the question is that yoshi's present age is 16 years old.