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March 4, 2015

March 4, 2015

Posted by **Rachel** on Friday, March 25, 2011 at 7:36am.

How many drops in the bag?

- math -
**Reiny**, Friday, March 25, 2011 at 8:50amAre we to assume that there are only 3 colours??

then

blue + red + green = total

let the total be x

(2/3)x + (3/8)(2/3)x + 3 = x

2x/3 + 1x/4 + 3 = x

multiply each term by 12

8x + 3x + 36 = 12x

36 = x

there are 36 drops

check: blue = (2/3)(36) = 24

red : (3/8)(24) = 9

green: 3

24+9+3 = 36

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