SOLUTION: Bob is twice as old as chuck,and susie is 10 years younger than bob.If the same of their ages is 100 years,how do is susie?

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Question 1046719: Bob is twice as old as chuck,and susie is 10 years younger than bob.If the same of their ages is 100 years,how do is susie?
Answer by addingup(3677) About Me  (Show Source):
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C = 1/2B
S = B-10
and
B+C+S = 100 Substitute:
B+1/2B+B-10 = 100
B+1/2B+B = 110
2.5B = 110
B = 44 Bob is 44
Susie is 44-10 = 34
Chuck is 1/2(44) = 22
:
John