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yociyoci Group Title

Please help me with venn-diagram question! This is a sample question: At a large school, 110 students were absent on Monday, 100 were absent on Tuesday, and 90 were absent on Wednesday. In total there were 170 students who were absent for at least one of the three days. What is the largest number of students who could have been absent for every one of the these three days?

  • one year ago
  • one year ago

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  1. UnkleRhaukus Group Title
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    |dw:1359079350989:dw|

    • one year ago
  2. skullpatrol Group Title
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    Can you put the numbers into the diagram?

    • one year ago
  3. skullpatrol Group Title
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    110 students were absent on Monday 100 were absent on Tuesday 90 were absent on Wednesday

    • one year ago
  4. yociyoci Group Title
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    |dw:1359080115255:dw| What is the relationship of the number 170?

    • one year ago
  5. skullpatrol Group Title
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    Where on the diagram is this sentence? " In total there were 170 students who were absent for at least one of the three days."

    • one year ago
  6. yociyoci Group Title
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    I am not sure

    • one year ago
  7. skullpatrol Group Title
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    Where on the diagram is "... absent for every one of the these three days?"

    • one year ago
  8. yociyoci Group Title
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    The centre will represent for all three days

    • one year ago
  9. skullpatrol Group Title
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    Yes.

    • one year ago
  10. yociyoci Group Title
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    But 170 only represents at least one of the three days, meaning that there can be 170 students who are absent for one, two, or three days respectively

    • one year ago
  11. yociyoci Group Title
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    I am quite sure if I am interpreting this correctly, can you give me more hints?

    • one year ago
  12. skullpatrol Group Title
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    Continue with your interpretation, you are doing fine.

    • one year ago
  13. Mertsj Group Title
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    There could have been at most 90 students absent each of the three days because only 90 students were absent on Wednesday an it is possible they were all absent on the other days as well because more than 90 students were absent on Monday and Tuesday.

    • one year ago
  14. yociyoci Group Title
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    Oh

    • one year ago
  15. yociyoci Group Title
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    Thanks

    • one year ago
  16. Mertsj Group Title
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    yw

    • one year ago
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