Answer:
If its multiplying then 40 if adding then 31.2
Explanation:
Put 80 over 100
simplify to get 4/5x = 32
Multiply both sides by 5/4 (because you flip)
the fives cancel out and the fours
then you have x=5/4 x 32
four goes into 32 making it x=5 x 8
5x8=40
:)