Answer:
x = 54
Explanation:
Let x be the "mystery number."
If we divide x by 6000 [(x/6000)] and then multiply by 41 [(x/6000)*41] and then add 0.31 [(x/6000)*41 + 0.31], the result is 0.679:
(x/6000)*41 + 0.31 = 0.679
( 41x/6000) + 0.31 = 0.679
( 41x/6000) = 0.369
x = (0.369*(6000))/41
x = 54