If the average number of valid votes in 2012 and 2015 was 7500 what will be the ratio between the va...........

Quantitative Aptitude ( CCS) Data Table

Year	Total Number of Votes	% of Valid Votes	Respective Ratio of Valid votes of male & Valid votes of female
2011	–	–	5:4
2012	12000	–	4:7
2013	8000	52%	–
2014	–	60%	5:3
2015	15000	58%	–

If the average number of valid votes in 2012 and 2015 was 7500, what will be the ratio between the valid votes in 2015 to 2012?

21:37

29:21

37:17

17:21

Explanation :
Number of valid votes in 2012 and 2015 = 15000
2015: 58% of 15000 =8700
2012: 15000 – 8700 = 6300
Ratio = 29:21

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