Today there are 3,659 thousand elementary and secondary teachers employed in a certain country. this number is expected to increase to 3,856 thousand by next decade. what is the percent increase?

Percent increase = (new number - original number) / original number...* 100
                           = (3856 - 3659) / 3659...* 100
                          = 197 / 3659* 100
                          = 0.0538 * 100
                          = 5.38% <==