[r+19/100]+[r+20/100]+…+[r+91/100]=546,求[100r]
[r+19/100]+[r+20/100]+…+[r+91/100]共73项
546÷73=7…35
所以[r]=7
[r+19/100]+[r+20/100]+…+[r+91/100]的后35项为8
即[r+56/100]=7,[r+57/100]=8
r+56/100
[r+19/100]+[r+20/100]+…+[r+91/100]=546,求[100r]
[r+19/100]+[r+20/100]+…+[r+91/100]共73项
546÷73=7…35
所以[r]=7
[r+19/100]+[r+20/100]+…+[r+91/100]的后35项为8
即[r+56/100]=7,[r+57/100]=8
r+56/100