six friends go white-water-rafting . the total cost for the adventure is $683.88 , including a $12 fee per person to rent floatation vest .

1 and 2

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.

v=1788.75

step-by-step explanation:

i belive that is the answer