700 level question

[shekar123]

The town of Sandwich has a total of 5,400 citizens. Of these, 1/4 are over the age of 60. If an advertising campaign attracts a number of new residents over 60 equal to 1/5 of the town's current 60+ citizens and there are no other changes in the population, approximately what percent of Sandwich's total population would be over the age of 60?

A)28.6

B)25

C)23.8

D)21

E)20

[student22]

The way I solved it: 5400 * 1/4 = 1350.

Next add a number equal to 1/5 of 1350, so (1/5) * 1350 = 270

Next its asking what's the percentage of people over 65 to the total population: (1350 + 270)/(5400 + 270) = 28.6. A.

Let me know if I'm right.

[gmatmachoman]

Yeah you are correct!!

[devp]

Earlier it was 25% and we added a few more, so the only option is 28.6 % therefore A.