Math, asked by umairiiiiiiii, 1 year ago

mean of 10, 30, Y, and 50 is 5. Y is?

sivaprasath: is it 50 ?

Answers

Answered by gurpritjai

mean = no. of obs /total no. of obs.

5= 10+30+y+50/4

20=90+y

y=-70

umairiiiiiiii: sory but there is a mistake in question 50 is 50. not 5

gurpritjai: where

umairiiiiiiii: by mistake i wrote 50 is 5 but actually it is 50 is 50 not 50 is 5 in question.

sivaprasath: okay,I answered it below, check it out

umairiiiiiiii: yes thanks both of you for your time

Answered by sivaprasath

Answer:

110

Step-by-step explanation:

Given :

Mean of three numbers 10,30, y & 50 is 50.

To Find :

The value of y

Solution :

We know that,

$mean = \frac{Sum \ of \ all \ the\ observations}{Total \ number \ of \ observations}$

⇒ $50 = \frac{10 + 30 + y + 50}{4}$

⇒ $50= \frac{90 + y}{4}$

⇒ $50 \times 4 = 90 + y$

⇒ $200 = 90 + y$

⇒ $200 - 90 = y$

⇒ $y = 110$

umairiiiiiiii: exactly thanks

sivaprasath: brainliest it if you like it,.

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