Someone //please// help. I'm so confused with question 4 and 5.
http://gyazo.com/ad37299d95b287c0d5b01a5fc632438c

Question

Someone //please// help. I'm so confused with question 4 and 5.
http://gyazo.com/ad37299d95b287c0d5b01a5fc632438c

anonymous · Answer

@shadow22 ??? Can you?

hartnn · Answer

ok, since its asked what % of total is each type of music, we first need to find out the total!

what is the sum of all sales ??

hartnn · Answer

3150+1800+.....+450 = ...?

anonymous · Answer

Oh! -Does the math.- Moment.

anonymous · Answer

Sorry about that. The site seemed to crash. 9000.

hartnn · Answer

yes, 9000 is correct :)
now, to find % for each genre,
do the division,
$\large \dfrac{sales}{total}
\times 100$

like for example : 
Classical - sales = 1350, total = 9000 , so % for classical would be 
1350/9000*100 = .... ?

anonymous · Answer

15?

hartnn · Answer

yes! thats correct, 15% for Classical :)
can you do same thing for other genres ?

anonymous · Answer

Yeah. I can! So that's what they were asking me to do?

hartnn · Answer

they we asking to find this % values for all genres :)
for 4.

anonymous · Answer

Thank you for that!

hartnn · Answer

you know how to do 5th part ? finding central angle?

anonymous · Answer

Now I got the percents, so yeah! Thank you so much.

anonymous · Answer

I thought I had to do it from those numbers.

hartnn · Answer

can u tell me what will be central angle for classical ?

anonymous · Answer

54?

hartnn · Answer

how did u get that ?

anonymous · Answer

I multiplied 15 by 360 and divided it by 100

hartnn · Answer

yes, its correct :) just wanted to know you're using correct way :)

anonymous · Answer

Awesome! Thank you tons.

hartnn · Answer

welcome ^_^