homework math
posted by Cassidy on .
For every 20 cakes ordered from Barry's Bakery, 8 cakes ordered are chocolate. Which proportion can be used to determine x, the total number of cakes ordered from the bakery when 30 chocolate cakes have been ordered?
A. 8/12 = x/30
B. 8/20 = x/30
C. x/8 = 30/20
D. 8/20 = 30/x

I'll be glad to check your answer.

(8/20) x = 30
x = 600/8 = 75 
The answer is B?
8*30 = 20*x
240 = 20x
240/20 = x
12 = x
x=12
correct? 
Nope. Please read the question again.
Damon's answer is correct. 
oh oh i see it now, i thought that 30 in all and how many are there in chocolate cake, i messed up the question. the answer should be D, right?

Right. D.

thank you ^.^

You're welcome. :)