Question

There are 50 numbers. Each number is subtracted from 53 and the mean of the numbers so obtained is found to be –3.5. What is the mean of given numbers?

Answer 1

Answer:-

Let x be the mean of 50 numbers.

∴ sum of 50 numbers = 50x

Since each number is subtracted from 53.

According to question, we have

53 × 50 - 50x / 50 = - 3.5

⇒ 2650 - 50x = -175 ⇒ 50x = 2825

⇒ x = 2825 / 50 = 56.5

Hope it helps u...✌️❣️