Question

The average salary of all staff of a school is 10,000. The average salary of teaching staff is = 12,000 and that of non-teaching staff is 5000, the numbe of non-teaching staff will be (A) 7 (B) 8 (C) 10 (D) 12​

Answer 1

Correct Answer:

B) 8

Description for Correct answer:

According to the question

10,000--> 20 teaching staff= 12,000--> non-teaching staff= 5,000-->5,000 =5--> 2,000=2.

5 units -> 20

1 unit -> 4

2 units -> 4×2= 8

∴Nonteaching staff = 8

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