In an election, $70\%$ of males were registered voters and $40\%$ females were registered voters, all registered males casted their votes. But only $65\%$ registered females casted their votes. If there were only $2$ candidates in the election and they have received the votes in the ratio $9:8$, how much percent (both men and women) of the registered voters casted their votes to the winner?
I have tried, but could not solve as number of males and females are not known. Is there any way to solve this. please help