Problema Solution
The difference the age of sarah and anna is 15. what is the sum of their age if sarah's age is twice Anna's age?
Answer provided by our tutors
let age of sarah = s
let age of anna =a
s-a = 15 (given)
s=2a (given)
2a-a=15
a=15
s=2a
s=30
s+a = 30+15= 45
total age = 45