Can someone please show me how to do this step by step to get marked!

Sorry i am weak but it was so much better to be able and not just to have to do this to be my own and not my life

The answer is 12 and I think for this question no step by step just use calculator

step-by-step explanation:

im not sure what the answer is

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.