Robert is 15 years older than his sister, Helen. The sum of their ages is 63. Find their ages.

Answer 1

Let x = Helen's age and x+15 = Robert's.

x + (x+15) = 63

Solve for x, then x+15.

Answer 2

x is Helen's age
(x + 15) is Robert's age

x + (x + 15) = 63
2x = 48
x = 24

Answer 3

alyssa is twice as old as janna three years from now the sum of thier age will be 42 how old alyssa

Answer 4

Siri, who is not yet 22 year old