Question

Solve :-
If the mean of first 10 score is 12 and the next 20 score is 9 and the last two score is 10 then, find the mean of 32 score
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Answer 1

Solution.

so, i think your answer is 45.

because if the score 10 is 12 and score 20 is 9 and the last two score is 10. hence, we will do the addition of 12+9+12+12=45.

Please mark me as brainliest.

Answer 2

Answer:

answer is 10

Step-by-step explanation:

mean = sum of the total no /total no

so,

1st 10scores =12 therefore x/10 =12

x=12×10= 120

next 20 =9

x= 180

last 2= 10

x = 20

then,120+180+9 = 320

mean of 32 scores = 320/32 =10

so ans=10