Homework Help: math aig

Posted by lidia on Monday, April 30, 2012 at 6:29pm.

mark has 48 marbles.5/12 of them are blue and 1/2 of them are yellow.how many more yellow marbles than blue marbles does he have?

my answer is 8,am i right.if not how.

math aig - bobpursley, Monday, April 30, 2012 at 6:33pm
Yellow: 1/2*48=24
Blue: 5/12 *48=20

How did you get 8?
math aig - visoth, Monday, April 30, 2012 at 6:36pm
first find out exactly how much of each you have with simply ratio cross multiplication

(x/48)=((5/12)

240= 12x divide by 12

gives you x = 20 (x is blue marbles)

(1/2)= (y/48)

2y= 48

y= 24 so he has 4 more yellows

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