SOLUTION: jenny is 3 times as old as her little sister, but only half as old as her brother. in four years time jenny will be twice as old as her sister, how old is jenny's brother?
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Question 491919: jenny is 3 times as old as her little sister, but only half as old as her brother. in four years time jenny will be twice as old as her sister, how old is jenny's brother? Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! jenny is 3 times as old as her little sister, but only half as old as her brother. in four years time jenny will be twice as old as her sister, how old is jenny's brother?
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let x=age of brother
x/2=Jenny's age
1/3*x/2=x/6=sister's age
..
4 years from now
x/2+4=2(x/6+4)
x/2+4=x/3+8
LCD=6
3x+24=2x+48
x=24
ans:
age of Jenny's brother=24 years
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