which of the following is equal to the rational expression when x is not equal to 3 or -10 a x-3/x+5 b x+5/x+10 c x-3/x+10 d x+5/x-3

lo98765432wqasdfghjkloi87654567890

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.