Mathematics · Ratio and Proportion

In village C (2013), 420 people did not cast their votes. The total population of the village increased by 25% from 2013 to 2018. In 2018, the ratio of males to females in the total population was 5 : 6. If 40% of the males voted and 10% of the total votes were declared invalid, out of which 60% were male votes, find the difference between the number of valid female votes and invalid female votes in village C in 2018.