Hi,

Am trying to help my autistic boy and unfortunately am not very good with math. He has a Age Word Problem as below:

Bill and Ben are brothers the sum of their ages is equal to 4 times Bob's age who is half as old as Bridget. The average age of the 4 children is 8. Write this as an equation, then solve it.

I tried to work out the equations and came out with something as below:

A=Bill's age

B=Ben's age

C=Bob's age

D=Bridget's age

A + B = 4C

D = 2C

A + B + C + D = 32

When I tried to work out the values, am not coming up with a whole number as the answer. Also am getting an invalid age value for A and B as well. What am I doing wrong?

Any advice will be much appreciated. Thanks in advance.