Question 1040180
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Please help me solve the following questions.
Brian is 4 years older than Bob while Bob is 11 years older than Mark. 
If their combined age is 86 years,  how old is Brian? 
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<pre>
  x            x+11        (x+11)+4
Mark's age    Bob's age    Brian's age
(youngest)  


Equation:

x + (x+11) + (x+11)+4 = 86.

Now solve it.
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