Mario and his friends ate 5/8 of a pie if the pie was cut into 8 pieces how many pieces are left?

since it was cut into 8 pieces, taking away 5/8 would make 3/5 left of it. hope this helps.

answer: i guess 5 units?

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.