Question

The average of 18 numbers is 37.5. If six numbers of average x are added to them, then the average of all the numbers increases by one. The value of x is:

विकल्प

• 40

• 41.5

• 42

• 56.7

Answer 1

56.7

Explanation:

Let total number = 4

Average = `(3 xx 5.6 - 1 xx 8.4)/4`

⇒ Average = 54.6 + 2.1 = 56.7