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xokatexo

  • 2 years ago

A school offers hockey and basketball. 300 students were surveyed. 120 students play hockey, only 90 students play basketball, only 30 students do not participate in either. Hoe many students play both hockey and baskeball?? Can someone go through this step by step with a venn diagram? this is on my test but i keep getting the wrong answer thanks!

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  1. completeidiot
    • 2 years ago
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    just be careful not to count the people who play both sports twice

  2. xokatexo
    • 2 years ago
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    ii did and i got the right number for both but idk something keeps happening so it doesn't add up to 300

  3. completeidiot
    • 2 years ago
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    |dw:1348172355374:dw| a total of 300 peopl that just means 120+90+30+x=300 solve for x

  4. xokatexo
    • 2 years ago
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    i cant use algerbra for it

  5. xokatexo
    • 2 years ago
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    algebra *

  6. completeidiot
    • 2 years ago
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    fine, pretend the x isnt there 300-120-90-30 = number of people who play both sports

  7. completeidiot
    • 2 years ago
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    need i explain it further?

  8. xokatexo
    • 2 years ago
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    yeah i did that but can you do the rest and ill see where i messed up?

  9. completeidiot
    • 2 years ago
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    i only see one question whats the other?

  10. completeidiot
    • 2 years ago
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    how many people play hockey total? how many people play basketball total?

  11. xokatexo
    • 2 years ago
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    thats the only question but idk how to solve it without algebra

  12. xokatexo
    • 2 years ago
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    well yeah i still need the numbers for the hockey and basketball

  13. completeidiot
    • 2 years ago
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    300-120-90-30 = 60 80 people play both sports its arithematic, not algebra we start with 300 people, 120 play onlyhockey meaning 180 people play basketball or dont play a sport, or both sports 30 people dont play a sport meaning 150 people play basketball or both sports 90 people play only basketball leaving only 60 people that play both sports

  14. completeidiot
    • 2 years ago
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    if you wanted to find the total amount of people who play basket ball, take the amount of people who play only basketball, and then add it to the number of people who play both sports same for hockey

  15. xokatexo
    • 2 years ago
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    the only thing i dont understand is why you subtract all the numbers in the beginning the rest i understand

  16. completeidiot
    • 2 years ago
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    ok, think of it like this say i have 10 apples, they are either yellow or red there are 6 red apples, how many yellow apples are there you would subtract in order to determine the number of yellow apples now think of it in terms of people

  17. completeidiot
    • 2 years ago
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    sorry i gotta go to class, i hope i answered your question

  18. xokatexo
    • 2 years ago
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    thanks so muchh

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