anonymous
  • anonymous
I need help on setting up an equation to a word problem please
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
Where is the problem?
anonymous
  • anonymous
Marcus has 1 apple, after I gave him some he had 5. How many did I give him? (Answer: 4)
anonymous
  • anonymous
A girl is currently 5 years older than her younger brother and 3 years younger than her older brother. Two years from the current time, the product of the ages of the brothers will be twelve times the age of the girl. What is the current age of the older brother?

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anonymous
  • anonymous
Sorry I misunderstood
anonymous
  • anonymous
Let the current age of the girl be x. Then the current age of her younger bro will b x-5. The current age of her older bro will b x+3 After 2 years girl's age will be x+2 The age of her younger bro after 2 years will b x-5+2=x-3 The age of her older bro after 2 years will b x+3+2=x+5 (x-3)(x+5)=12(x+2) x^2+2x-15=12x+24 x^2-10x-39=0 (x-13)(x+3)=0 x=13/x=-3 Since age cannot b negativ x=13. The current age of her older bro will b 16.
anonymous
  • anonymous
Thank you! I see where I made my mistake so this helps!

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