# Word Problem : Grade 6 Math

• Oct 14th 2009, 03:02 AM
Miss G
Word Problem : Grade 6 Math

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 AM
alexmahone
Quote:

Originally Posted by Miss G

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?

In order to ensure that she has 3 green marbles, she would have to take out 3+14+15=32 marbles
• Oct 14th 2009, 03:43 AM
Miss G
Quote:

Originally Posted by alexmahone
In order to ensure that she has 3 green marbles, she would have to take out 3+14+15=32 marbles

Thanks Alex. But can you explain why it's 3+14+15 ? Sorry but I'm confused.. :)
• Oct 14th 2009, 04:09 AM
Quote:

Originally Posted by Miss G

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?

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 PM
Miss G
Thank you so much. I really appreciate it :)

xoxo

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