Question 767035: Mrs. Cruz is 40 years old and her eldest daughter is 12. When will she be twice as old as her eldest daughter?
Please help me. thanks! Answer by Cromlix(4381) (Show Source):
You can put this solution on YOUR website! 40 + x = 2(12 + x)
40 + x = 24 + 2x
Collect like terms
x = 16
Proof:
40 + x = 2(12 + x)
40 + 16 = 2(12 + 16)
56 = 56.
Hope this helps.
:-)
