SOLUTION: According to​ statistics, a person will devote 33 years to sleeping and watching TV. The number of years sleeping will exceed the number of years watching TV by 23. Over the​ l

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Question 1158952: According to​ statistics, a person will devote 33 years to sleeping and watching TV. The number of years sleeping will exceed the number of years watching TV by 23. Over the​ lifetime, how many years will the person spend on each of these​ activities?
Answer by ikleyn(52905)   (Show Source): You can put this solution on YOUR website!
.

Assuming that sleeping and watching TV are DISJOINT events, we cam write THESE two equations


    Sleeping + watching = 33

    Sleeping - watching = 23
-----------------------------------   Add the equations.  

    2*sleeping = 33 + 23 = 56;  hence,  sleeping = 56/2 = 28 years.


Then watching TV is  33-28 = 5 years.

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