Question

James is x years old now and the sum of his age is and his brothers age is 10.

1) How old is James brother?
2) How old was James 3 years ago?
3) How old was James's brother 3 years ago?
4) 3 years ago, James's brother was three times older than James. Use this information to write an expression
5) Solve the equation from question 4 to find the age of both boys.
I know it a lot but I really need some help right now, if you do help I just want to say thank you in advance.

Answer 1

1) James brother is 10-x years old

2) James was 3 years ago x-3 years old

3) James brother was 3 years ago 7-x years old

4) 3(x-3)=7-x

5) James is 4 years old, his brother is 6 years old

Explanation:

3) 10 - x - 3 = 7 - x

5) 3* James age 3 years ago = James brothers age 3 years ago

<=> 3*(x-3) = 7-x

<=> 3x - 9 = 7 - x

<=> 4x = 16

<=> x = 4