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∙ 14y agomake it out of 100, so 40 times 2.5 equals 100 and 18 times 2.5 equals... 45 so its 45 percent
Wiki User
∙ 14y agoSonya has no red blue marbles. All she has are 24 blue, 18 red and 12 green.
24
yes, it is 18
it's 20/50 times 19/49 times 18/48 tmes 17/47 etc down to 1/31
First white = 10/20 second white = 9/19 third white = 8/18 fourth white = 7/17 firth white = 6/16 Total probability = 10/20 x 9/19 x 8/18 x 7/17 x 6/16 = 21/1292 ~= 0.0163
9:10
Sonya has no red blue marbles. All she has are 24 blue, 18 red and 12 green.
24
24 red marbles
yes, it is 18
18:20 reduces to 9:10 if you divide both sides by 2
it's 20/50 times 19/49 times 18/48 tmes 17/47 etc down to 1/31
it's the LCM of 18 and 42 18 = 2x32 42 = 2x3x7 LCM = 2x32x7 = 126
You are TOLD that 18 are blue.
I think the trading is the other way around and then the answer is 18 marbles in all.
First white = 10/20 second white = 9/19 third white = 8/18 fourth white = 7/17 firth white = 6/16 Total probability = 10/20 x 9/19 x 8/18 x 7/17 x 6/16 = 21/1292 ~= 0.0163
The marbles are now in a ratio of 4:1 between them. Ben has 72 marbles Bill has 18 marbles