R Think
Think about how we add and subtract. What number goes on top? why? How
do you borrow? Why? How do you carry over? Why? Tell me step by step
how to add, then how to subtract.

answer: 414,377,008

step-by-step explanation:

just multiply it

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.

your answer is

a.

5

step-by-step explanation: