the population of a town increased from 50000 to 80000 in a decade . the average percent increase of population per year is :	Pick one
A) 4.37 %
B) 5 %
C) 6 %
D) 8.75 %
E) none of these

Rationale: solution increase in 10 year = ( 80000 - 50000 ) = 30000 . increase % = ( 30000 / 50000 x 100 ) % = 60 % â ˆ ´ required average = ( 60 / 10 ) % = 6 % answer c
Answer: C