Question

the average salary of entire staff in a college is rs 3000 per day. the average salary of teaching staff is rs 6000 and that of non teaching staff is rs 2000. if no of teachers is 160 find the number of non teaching staff

Answer 1

Step-by-step explanation:

8). The average age of 20 boys in a class is 12 years. 5 new boys are admitted to the class whose average age is 7 years. The average age of all the boys in the class becomes

Answer 2

Answer:

480

Step-by-step explanation:

Average salary = (Sum total salaries) / (Number of staff members)

Let's assume,

Sum total of teaching staff salaries = x

Sum total of non-teaching staff salaries = y

Number of non-teaching staff = z

Average salary of teaching staff

₹6,000 = x / 160

x = ₹9,60,000

Average salary of non-teaching staff

₹2,000 = y / z

y = ₹2,000z

Average salary of entire staff

₹3,000 = (x + y)/(160 + z)

₹3,000 = (₹9,60,000 + ₹2,000z)/(160 + z)

₹4,80,000 + ₹3,000z = ₹9,60,000 + ₹2,000z

₹1,000z = ₹4,80,000

z = ₹4,80,000 / ₹1,000

z = 480