Question 691655: clara is one third her sister's age 4 years later clara will be 3less than half her her sister 's age what was clara s age 3 years ago Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! clara is one third her sister's age 4 years later clara will be 3less than half her her sister 's age what was clara s age 3 years ago
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let x=clara's age 3 yrs ago
x+3=clara's present age
3(x+3)=sister's present age
4 years later:
(x+7=clara's age
(3(x+3)+4)=sister's age
3less than half of sister's age=(3(x+3)+4)/2-3
x+7=(3x+9+4)/2)-3
x+10=(3x+13)/2)
2x+20=3x+13
x=7
clara's age 3 yrs ago=7
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