Math, asked by sidra7084, 4 months ago

18. Average of 3, 4, x
and 5 is 5, then the value of x must be:
(A) 6
(B) 10
(C) 8
(D) 9
(E) None of these

Answers

Answered by dhroov2917

Answer:i

8 is the right answer in my opinion

average=sum of no./ no.given

5=4+3+5+x/4

5=12+x/4

5×4=12+x

20=12+x

20-12=x

8=x

sidra7084: can you write please in explanation

sidra7084: by the way your answer is correct but explanation

dhroov2917: kardiya

sidra7084: thanks

dhroov2917: koi na

Answered by sandeek0293

Answer:

right answer of this question is option no (e)

sidra7084: explanation???????...

rohitpal537: non of these

rohitpal537: none*

rohitpal537: 3:4 :: x:5

sidra7084: we have to find average not proportion

rohitpal537: 3×5 = 4×X

rohitpal537: 15 = 4x

rohitpal537: so x = 15/4

sidra7084: but there is no option of 15 ok

sandeek0293: yes

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