Find the average for the following numbers:

A) 12 11 1/2 11 2/8
B) 11 7 9
C) 12 13 10

Question

Find the average for the following numbers:

A) 12      11 1/2   11 2/8
B) 11          7            9
C) 12         13         10

calculusxy · Answer

finding the average is basically adding up all of the numbers and then dividing it by how many numbers there were on the data set. 

e.g. 

find the average of 10, 20, 30

$$\large \frac{ 10 + 20 + 30 }{ 3  } =\frac{ 60 }{ 3 } = 20$$
so 20 is the average from this example data set

xxmuslimxx · Answer

I know. But A is confusing for me...

calculusxy · Answer

$$\large \frac{ 12 + 11 \frac{ 4 }{ 8 } 11 \frac{ 2 }{ 8 } }{ 3 }$$

calculusxy · Answer

notice how i changed 11 1/2 to 11 4/8

xxmuslimxx · Answer

34 6/8

calculusxy · Answer

no 34 3/4

calculusxy · Answer

$$\frac{ 6 \div 2 }{ 8 \div 2 } = \frac{ 3 }{ 4  }$$

xxmuslimxx · Answer

Oh yeah. My bad. I got carried away.

xxmuslimxx · Answer

The next step would be dividing that by 3.

calculusxy · Answer

yes

xxmuslimxx · Answer

That's where I got stuck...

xxmuslimxx · Answer

|dw:1443036449032:dw|

xxmuslimxx · Answer

@calculusxy

anonymous · Answer

Tip: $\huge \frac{ 3 }{ 4 }$ can also be written as $\huge 0.75$.

anonymous · Answer

|dw:1443036672177:dw|

xxmuslimxx · Answer

Yeah...I know, but I do not see how that can help?

anonymous · Answer

Oh really? You don't know how to do this? Okay... |dw:1443036762728:dw|

xxmuslimxx · Answer

Humiliating me doesn't help either.