I need some help I've been on the same problem for 20 minutes and I keep getting it wrong. Ill give 15 points.

answer: a.   one is a factor of every whole number since every number is divisible by itself.

a is the correct

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.

im guessing (23,14). hope this : )