SOLUTION: A is 4 times as old as B who is 3 times as old as C . if the sum of their age is 80 , how old is B ?

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Question 1083719: A is 4 times as old as B who is 3 times as old as C . if the sum of their age is 80 , how old is B ?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
system%28A=4B%2CB=3C%2CA%2BB%2BC=80%29

4B%2BB%2B%28B%2F3%29=80
-
15B%2BB=240
16B=240
highlight%28B=15%29 and use this to evaluate A and C.