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School_Island_sad_face

  • 2 years ago

Andreas received a new book for his birthday. He read three-eighths of the book in the first week, then fifty-three more pages in the second week. If he still has one hundred seventeen pages to read, how many total pages are in his book?

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  1. School_Island_sad_face
    • 2 years ago
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    Did you figure it out???

  2. SBGamer
    • 2 years ago
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    Yes

  3. SBGamer
    • 2 years ago
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    Where are you stuck

  4. School_Island_sad_face
    • 2 years ago
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    the 3/8ths...

  5. SBGamer
    • 2 years ago
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    53+107=?

  6. School_Island_sad_face
    • 2 years ago
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    I got that 117 and 53 is 170 but I don't know what to do with the 3/8

  7. SBGamer
    • 2 years ago
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    160, therefore a number + 3/8 has to = 160, not 170

  8. School_Island_sad_face
    • 2 years ago
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    dude 53+117=170

  9. School_Island_sad_face
    • 2 years ago
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    You do the problem backwards. you start with the end and work your way forward...

  10. madscientist101
    • 2 years ago
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    272

  11. badreferences
    • 2 years ago
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    Total number of pages in the book, we'll call that n. n=(3/8)n+53+117=...? Algebraically manipulate the function.

  12. School_Island_sad_face
    • 2 years ago
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    How do I figure that out???

  13. School_Island_sad_face
    • 2 years ago
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    I tried but I just can't get it

  14. badreferences
    • 2 years ago
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    Alright, so let's start with n=(3/8)n+53+117. n is the total number of pages. We read 3/8 of n, so (3/8)n. Then we read 53 more pages. Then we still have 117 pages more to read. A total of n. Yes? Subtract (3/8)n from both sides. (5/8)n=53+117. Add the right side. 170. Divide by 5. 34. Multiply by 8. You get n=...?

  15. School_Island_sad_face
    • 2 years ago
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    I am not sure that is correct

  16. School_Island_sad_face
    • 2 years ago
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    I thought that you subtracted 53 from both sides and then divide 3/8 from both sides... Am i correct?

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