Algebra (Age Problem)
posted by Nikko on .
Five years ago Rico's age was half of the age he will be in eight years. How old is he now?

present age  x
age five years ago  x5
age five years from now  x+8
"Five years ago Rico's age was half of the age he will be in eight years"
x5 = (1/2)(x+8
times 2
2x  10 = x + 8
x = 18
Rico is now 18 yrs old
check:
5 years ago: 13
8 years from now: 26
is 13 equal to 1/2 of 26 ? , YES 
J

Maria is 17 years old.
The sum of the ages of Maria and Pearl is 72.
How old is Pearl? 
55

which of the following represents " the sum of the ages of Harry and Henry, who is three years younger, is thirtyfive"?