In the image, what is Janelle’s position relative to sea level while she is diving? What should the altimeter read at this position?

you are saying it as if a fact, not a question, but yes, you would be correct? ; )

step-by-step explanation:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.