Question 818572: [ Ben asks Amy how old she is and she says: "if you subrtact 30 years from the triple of years I had last year, you will get half of my age now", how old is Amy? ]
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! 3(a - 1) - 30 = (1/2)a
3a - 3 - 30 = (1/2)a
3a - 33 = (1/2)a
(6/2)a - (1/2)a = 33
(5/2)a = 33
a = (2/5)33
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answer:
Amy is 13.2 years old
that's 13 years, 2 months, and 12 days old
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