Math, asked by harman6476, 1 year ago

please give me correct if you give me correct answer then I choose your answer as brainlist​

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Answered by AJ3012
1

Mean=sum of observation /total numbers of observation

=10*6+15*8+20*p+25*10+30*6/

6+8+p+10+6

=60+120+20p+250+180/30+p=20.2

610+20p=20.2(30+p)

610+20p=606+20.2p

20.2p-20p=610-606

0.2p=4

p=4/0.2

Thus p=20

Answered by siddhartharao77
4

Answer:

p = 20

Step-by-step explanation:

x                         f                     fₓ

10                       6                    10

15                       8                    120

20                       p                   20p

25                       10                  250

30                        6                   180

                         --------               -----------

                          30 + p             610 + 20p

∴ Mean = ∑fₓ/f

⇒ 20.2 = (610 + 20p)/(30 + p)

⇒ 20.2(30 + p) = (610 + 20p)

⇒ 606 + 20.2p = 610 + 20p

⇒ 4 = 0.2p

⇒ p = 20.

Therefore, the value of p = 20.

Hope it helps!

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