If there are 300 staff at the company, how many are under 22?

1.   ?    10
2.   ?    30
3.   ?    50
4.   ?    60

If there are 300 staff at the company, how many are 22 to 30 years old?

1.   ?    20
2.   ?    30
3.   ?    60
4.   ?    90

If there are 300 staff at the company, how many are 31 to 40 years old?

1.   ?    25
2.   ?    50
3.   ?    75
4.   ?    100

If there are 300 staff at the company, how many are 41 to 50 years old?

1.   ?    90
2.   ?    30
3.   ?    100
4.   ?    120

If there are 300 staff at the company, how many are 51 to 60 years old?

1.   ?    15
2.   ?    30
3.   ?    60
4.   ?    45