Question 930814: The sum of the ages of the two brothers is 20.In five years, one is twice the other. Find the present ages of the two brothers Answer by ptfile(81) (Show Source):
You can put this solution on YOUR website! x = the age of the older brother
y = the age of the younger brother
The sum of the ages of the two brothers is 20.
x+y=20
y=20-x
In five years, one is twice the other.
x+5=2(y+5)
x+5=2(20-x+5)
x+5=40-2x+10
x+5=50-2x
3x=45
x=15
y=5
The older brother's age is 15 years old while the younger brother's age is 5 years old.
