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Math Help - Word Problem : Grade 6 Math

  1. #1
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    Word 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?
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  2. #2
    MHF Contributor alexmahone's Avatar
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    Quote Originally Posted by Miss G View Post
    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?
    In order to ensure that she has 3 green marbles, she would have to take out 3+14+15=32 marbles
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    Quote Originally Posted by alexmahone View Post
    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..
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    Quote Originally Posted by Miss G View Post
    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?
    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.
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    Thank you so much. I really appreciate it

    xoxo


    Quote Originally Posted by hoppingmad View Post
    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.
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