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123F

Based on the histogram, how many students were included in the survey? What percentage of the students surveyed babysat for at most three hours last weekend? Show your work.

  • 2 years ago
  • 2 years ago

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  1. 123F
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    • 2 years ago
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  2. 123F
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    HELP plz

    • 2 years ago
  3. mathteacher1729
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    Firstly, do you know how to read this kind of graph? In other words, how many students babysat for 0 to 3 hours? How many for 4-7 hours?

    • 2 years ago
  4. 123F
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    25?

    • 2 years ago
  5. mathteacher1729
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    I meant individually... 0-3 hrs = how many? 4-7 hrs = how many? etc.

    • 2 years ago
  6. 123F
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    0-3 hrs = 20 4-7 hrs = 5 8-11 hrs = 30 12-15 hrs = 25

    • 2 years ago
  7. mathteacher1729
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    Correct! Ok, now the next step is this: how many students were included in the survey? Well, that's easy -- just add them all up. :)

    • 2 years ago
  8. 123F
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    20+5+30+35=90?

    • 2 years ago
  9. 123F
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    thank you

    • 2 years ago
  10. 123F
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    http://www.youtube.com/watch?v=BbSmCrvlyrA

    • 2 years ago
  11. mathteacher1729
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    You're welcome. But that's the first part of the problem. There is still one part remaining! >What percentage of the students surveyed babysat for at most three hours last weekend? That, too, should be easy. "babysat for AT MOST" three hours means only those who did 0 to 3 hrs. So take that number (the 0-3 hours) and divide it by 90 , the multiply by 100. That's your percent. :)

    • 2 years ago
  12. mathteacher1729
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    Oh my, what a sad song. :( Here is a happy song: http://www.youtube.com/watch?v=Ds2RrLNPAHc

    • 2 years ago
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