Assuming that this question is based on a graph, and that this graph tells us that people 50-64 years make up 35% of all the voters, then it would mean that
35%of 12000=

So, assuming that people at age 50-64 make up 35% of the voters, then 4200 of them voted.
I'm sorry but I'm not into square roots yet :(
Find the least common denominator or LCM of the two denominators. LCM of 4 and 15 is 60. 4x15= 60 34=3x154x15=4560 3/4 is bigger