SOLUTION: the sum of the ages of two sister is 20 years. two years from now, one of them will be three times as old as the other then. find their present ages.
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Question 992445: the sum of the ages of two sister is 20 years. two years from now, one of them will be three times as old as the other then. find their present ages. Answer by satyareddy22(84) (Show Source):
You can put this solution on YOUR website! Let x and y are the ages of two sisters.
x+y=20------(1)
x+2=3(y+2)=3y+6
x+2=3y+6
x-3y=4------(2)
From (1)x=20-y,substituting in (2)
20-y-3y=4
4y=16=>y=16/4=4
y=4
x=20-4=16
S0 the ages of two sisters are x=16yrs,y=4yrs
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