Brandon is 3 years older than ian. The sum of their age is 27 how old is Brandon?

Brandon is 15 years old.

Let Ian's age be represented by x.

Brandon's age = x + 3

Ian's age + Brandon's age = 27

x + (x + 3) = 27

2x = 27 - 3

2x = 24

2x / 2 = 24 / 2

x = 12 * Ian's Age.

Brandon's Age = x + 3 = 12 + 3 = 15.

To check:

Ian's age + Brandon's age = 27

12 + 15 = 27

27 = 27