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Matt71

  • 3 years ago

There are x benches and y students in an auditorium. When a bench is seated with 3 students, 18 are left standing. If a bench is seated with 4 students, 3 benches would be empty. a. Write 2 equations showing the relationship between x benches and y students b. Find the number of benches and students

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  1. MarinaDL
    • 3 years ago
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    x- benches, y-students y=3x+18 x-3=y/4

  2. Matt71
    • 3 years ago
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    Thanks, what about b?

  3. MarinaDL
    • 3 years ago
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    you need to try to solve it by yourself :-) I will help you if you will need it.

  4. Matt71
    • 3 years ago
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    Well alright, no prob there, thanks for the help again

  5. MarinaDL
    • 3 years ago
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    you are welcome. Do you understand it?

  6. Matt71
    • 3 years ago
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    Kind of, think I could figure it out by myself though

  7. MarinaDL
    • 3 years ago
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    y=3x+18 y=4(x-3) right parts are equal and you can find x

  8. Matt71
    • 3 years ago
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    Yep, I get it

  9. MarinaDL
    • 3 years ago
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    answer is?

  10. Matt71
    • 3 years ago
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    one sec

  11. Matt71
    • 3 years ago
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    x=30 right?

  12. MarinaDL
    • 3 years ago
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    yes

  13. Matt71
    • 3 years ago
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    so y=108

  14. MarinaDL
    • 3 years ago
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    yes, you are right. With system of equations always good to do check for both equations.

  15. Matt71
    • 3 years ago
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    Sweet

  16. MarinaDL
    • 3 years ago
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    glad to help

  17. miteshchvm
    • 3 years ago
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    x- benches, y-students y=3x+18 x-3=y/4 y=3x+18 y=4(x-3) x = 30 y = 108

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