Question 1096510
Anthony is X years old. His brother is 5 years older than him.
 The sum of their ages now is 35 years.
 What will be be the sum of their ages in 10 years time?
:
The sum of their ages now is 35. In 10 yrs they both will have aged 10 yrs, therefore the sum will increase by 20 yrs, 55 is the sum now.
We don't care about x