Please help. Many thanks :)

Cheyenne has 8 green marbles, 14 purple marbles, 15 pink marbles inside a box. Without looking, how many marbles would she need to take out to ensure that she has 3 green marbles?

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- Oct 14th 2009, 03:02 AMMiss GWord Problem : Grade 6 Math
Please help. Many thanks :)

Cheyenne has 8 green marbles, 14 purple marbles, 15 pink marbles inside a box. Without looking, how many marbles would she need to take out to ensure that she has 3 green marbles? - Oct 14th 2009, 03:17 AMalexmahone
- Oct 14th 2009, 03:43 AMMiss G
- Oct 14th 2009, 04:09 AMhoppingmad
well let's presume that Cheyenne is extremely unlucky and for the first 14 times she picks up a marble it's purple

14

then the next 15 times she pickes up it's pink!

14 + 15 = 29

she's picked up 29 marbles and hasn't gotten 1 green one yet, but there's only 8 green marbles left, if she needs at 3 she only has to pick up 3 more times...

14 + 15 + 3 = 32 times she needs to take out to ensure 3 green marbles. - Oct 14th 2009, 05:19 PMMiss G