math

MEghan had 36 books in her locker. Some were library books, text books and the rest were telephone books. THe number of library books and phone books combined equals twice the number of text books. The number of text books and telephone books equals three times the number of library books. How many of each kind of book were in Megan's locker?

asked by maggie
  1. telephone books --- x
    textbooks ----- y
    library books 36-x-y

    36-x-y + x = 2y or 3y = 36
    y = 12
    y + x = 3(36-x-y)
    y+x = 108 - 3x - 3y
    4x + 4y = 108
    x+y= 27
    but y = 12
    so, x + 12 = 27
    x = 15
    then 36-12-15 = 9

    number of telephone books = 15
    number of textbooks = 12
    number of library books = 9

    posted by Reiny
  2. gajkwh;reg

    posted by BOB

Respond to this Question

First Name

Your Response

Similar Questions

  1. algebra

    John has 36 books in his locker. He has text books,library books, and telephone books. How many books of each kind does he have if: lib + tel= 2x text books and text + tel = 3x lib books I think it'd be easier to let T,L and B
  2. Math, Please help :/

    Kyle had 36 books in his locker. Some were library books, some were textbooks, and the rest were telephone books. The number of library books and telephone books combined equals 3 times the number of library books.How many of each
  3. math

    kyle had 36 books in hislocker. some were library books, some were textbooks, and the rest were telophone books. the number of library books and textbooks combined equal twice the number of textbooks. the number of textbooks and
  4. math

    kyle had 36 books in hislocker. some were library books, some were textbooks, and the rest were telophone books. the number of library books and textbooks combined equal twice the number of textbooks. the number of textbooks and
  5. math

    kyle had 36 books in hislocker. some were library books, some were textbooks, and the rest were telophone books. the number of library books and textbooks combined equal twice the number of textbooks. the number of textbooks and
  6. English

    1. We should not scribble in books in the library. 2. We should not write down in books in the library. 3. We should not make a noise in the library. 4. We should not walk making sounds in the library. 5. We should not tear books
  7. MATHS

    Mrs.Koh purchased new books for the school library, of which 6 were Mathematics books, 7 were Science books, 10 were Music books, 3 were Art books, and 4 were social studies books. All of these books were different. She picked a
  8. English

    1. I have more than five books. 1-2. I have over five books. (Does it include five books?) 2. I have five or more books. (It includes five. At least I have five books. Am I right?) 3. I have less than five books. 4. I have under
  9. Maths

    20% of the books in a library were fiction books while the rest were non-fiction books. When 30% of the fiction books and 15% of the non-fiction books were borrowed, there were 1312 books left in the library. How many books were
  10. Math

    In a school library there are 35% English books,25% maths books and the remaining 250 books are on general subjects. How many books are there in the library?

More Similar Questions