During an election where only two contestants A and B competes, initially when voters’ turnout was 70%, A got \(33\frac{1}{3}\% \) more votes than B. After some time, when the voters’ turnout was 80%, A got \(10\frac{{10}}{{19}}{\rm{\% }}\) more than B. What percentage of the voters who voted after 70% turnout voted for B?
1
20
2
40
3
60
4
80
5
90