WILL GIVE MEDAL!!!

In a bag containing black and white marbles,3/8 of the marbles are black.

Which could be the numbers of black and white marbles in the bag?

A.
3 black and 8 white

B.
12 black and 20 white

C.
20 black and 12 white

D.
8 black and 3 white

Question

WILL GIVE MEDAL!!!

In a bag containing black and white marbles,3/8  of the marbles are black.

Which could be the numbers of black and white marbles in the bag?
 
 A.
3 black and 8 white
 
 B.
12 black and 20 white
 
 C.
20 black and 12 white
 
 D.
8 black and 3 white

bibby · Answer

find the ratio where 3:8 represents the number of blacks to whites

anonymous · Answer

how?

bibby · Answer

what I'd do is set them all as fractions of black to white. so for example b = $\frac{12}{20}$ and then just simplify it $\large \frac{12}{20}=\frac{3}{5}$