SOLUTION: Beth is twice as old as Donna. The sum of their ages is 54. Find their ages ?

Question 754218: Beth is twice as old as Donna. The sum of their ages is 54. Find their ages ?
Found 2 solutions by Nsam, lenny460:
Answer by Nsam(3) (Show Source): You can put this solution on YOUR website!
2x=y
x+y=54,y=54-x
2x=54-x,.(3x=54)1/3
x=18...y=54-18
y=36.
Answer by lenny460(1073) (Show Source): You can put this solution on YOUR website!
Beth is twice as old as Donna. The sum of their ages is 54. Find their ages ?
Let the age of Donna be x
Let the age of Beth be 2x
Therefore:
2x + x = 54
3x = 54
Divide each side by 3
3x/3 = 54/3
x = 18
2x = 18 * 2 = 36

Answer:
Donna is 18 years old and
Beth is 36 years old.

Lennox Obuong
Algebra Tutor
Nairobi, Kenya
Email: lennoxobuong@yahoo.com
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