Find the mean 1/5, 2.6, 7.8, + 3/4?

I need to find the mean of the numbers above in the question-  the possible answers are -  11.35 or 5.675 or 3.042 or 2.8375
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2 Answers

1/5,2.6,7.8+3/4=0.2,2.6,7.8+0.75=11.35/4=2.8372
by Level 1 User (300 points)
It is 2.8375. You get this by adding all 4 rationals and then dividing the result by 4.
by Level 1 User (140 points)

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