Eight white balls and twenty black balls are in a bag. What is the probability of drawing a black ball in one draw?
1
2/5
5/7

Question

Eight white balls and twenty black balls are in a bag. What is the probability of drawing a black ball in one draw?
1
2/5
5/7

anonymous · Answer

ok so, to solve this problem first we will need to find the ratio between the white balls and the black balls.

anonymous · Answer

there are 8 white and 20 black

tell me the ratio of the white balls to the black balls

anonymous · Answer

8:20

anonymous · Answer

correct! now we need to simplify the ratio... hold on...

anonymous · Answer

ok, now to simplify. what to factors equal 8?

anonymous · Answer

here... im sure your in a hury so I will tell you 

8= 2*4
20=4*5

anonymous · Answer

then we cross out the "like factors" which is basically crossing out the two twos
P.S 20=2*10

anonymous · Answer

then you have 4/5 as your answer

anonymous · Answer

got that?

anonymous · Answer

oh wait! its talking about black balls specifically I read this wrong it is actually 2/7

anonymous · Answer

im sorry im back