Question 641686: After 15 yrs, Salma will be four times as old as she is now. Determine her present age.
Answer by lenny460(1073)   (Show Source):
You can put this solution on YOUR website! After 15 yrs, Salma will be four times as old as she is now. Determine her present age.
Let Salma's age be n years.
After 15 years, Salma will be (n + 15) years
Therefore:
n + 15 = 4n
Subtract n from each side of the equation.
n + 15 - n = 4n - n
Combine like terms:
n - n = 0
4n - n = 3n
Therefore:
15 = 3n or
3n = 15
Divide each side by 3
3n/3 = 15/3
n = 5
Therefore:
Salma is 5 years old now.
In 15 years Salma will be (5 + 15) = 20 years.
Lennox Obuong
Algebra Student
Email: obuong3@aol.com
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