Hello! 7/20 employees are between the ages of 20 and 30. That's 35% of employees, because 7/20 is 0.35 and 0.35 * 100 is 35. To find the amount of employees in that age range, all you have to do is multiply 35% by the total number of employees. 13,220 * 35% (0.35) is 4,627. There. 4,627 employees that work at the B&B bank are between the ages of 20 and 30.