anonymous
  • anonymous
PLZ help! Problem in description...
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Building A was built 10 years before building B and 5 years after building C. In 20 years, the combined ages of building A and building C will be 3 times that of building B. What is the present age of each building?
Compassionate
  • Compassionate
""let A be 'a' years old B be 'b' yrs old and C be 'c' years old. a = b+10 c = a + 5 a +20 + c +20 = 3 (b + 20) a + 20 + a + 5 + 20 = 3 (a -10 + 20) 2a + 45 = 3a + 30 a =15 b = a - 10 = 5 c = a + 5 = 20"" - Yahoo Answers
anonymous
  • anonymous
Thanks so much!

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