Correct Answer - Option 2 : b only

**Given****∶**

60% of the staff is of teachers.

Out of these 40% are earning more than Rs.37,325.

Also, 50% of the total staff earn more than Rs.37,325 per year.

**Formula** **Used**∶

Simple concept of percentage.

**Calculation****∶**

Let the total number of staff be 100

Number of teachers,

⇒

(60 × 100)/100 =

60
And Number of administrative staff,

⇒ (40 × 100)/100 = 40

Number of teachers earn more than Rs.37,325,

⇒ [60 × 40]/100 = 24

Total number of staff earning more than Rs.37,325,

⇒

(50 × 100)/100 =

50
Number of administrative staff earn more than Rs.37,325 = Total staff earning more than Rs.37,325 - No. of teachers earn more than Rs.37,325

⇒

50- 24 =

26
Number of administrative staff earn Rs.37,325 or less,

⇒

40 - 26 =

14
Percentage of administrative staff earning Rs.37,325 or less,

⇒

(14 × 100)/40 =

35%
**∴ The required percent of administrative staff earning Rs.37,325 or less is 35%.**