Problema Solution
Pamela is thrice as old as her sister Paula. The sum of their ages is 40. How old is each now?
Answer provided by our tutors
let 'x' represent Paula's age, then '3x' represents Pamela's age
40 =x +3x
4x = 40
x = 40/4 = 10
3*10 = 30
Paula is 10 years old, Pamela is 30 years old