Question 1135481
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This problem is SIMPLE, and the major step in its solution is to choose the major unknown REASONABLY.


<pre>
Let D be the Daniel age.

Then Jake's age is 3D, according the condition,

     while Eric's age is (3D-4) years.


Now use the info about the sum of their ages.

It gives you an equation


    D + 3D + (3D-4) = 94.


Simplify and solve it

    7D - 4 = 94

    4D = 94 + 4 = 98

     D = {{{98/7}}} = 14.


Thus Daniel is 14 years old;  Jake is 3*14 = 42 years old.


<U>ANSWER</U>.  Jake is 42 years old.


<U>CHECK</U>.  14 + 42 + (42-4) = 94.     ! Correct !
</pre>

Solved.


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Ideally, &nbsp;each Math problem you solve in School, &nbsp;should teach you something useful.



&nbsp;&nbsp;&nbsp;&nbsp;This problem is to teach you to choose the major unknown in a reasonable way . . .