(a).A bank tellers’ hourly wage will increase from $24 to $27.60.
The increament n wage is

Therefore, the percent of increament is

Therefore, it represents 15% increament.
(b). An employee’s salary for Alar Services is $37,500. Next year, she will get an 8% increase in salary.
So, new salary is

Therefore, new salary is $40500.