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anonymous

  • one year ago

Jose put 1/2 of his money in the bank. He spent 1/3 of his remaining money on books. He has $18 left. How much did he start with? Show work, please.

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  1. iGreen
    • one year ago
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    Try working backwards.

  2. iGreen
    • one year ago
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    \(\sf \dfrac{1}{3}\) of the money was spent on books..so divide 18 by 1/3, or multiply by its reciprocal, 3.

  3. iGreen
    • one year ago
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    Tell me what you get.

  4. welshfella
    • one year ago
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    let him start with x dollars 1/2 in bank = ( 1/2) x 1/3 of the remaining = (1/3) * (1/2) * x = 1/6 x so x - ( 1/2) x - (1/6)x = 18 solve for x

  5. welshfella
    • one year ago
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    x - (2/3) x = 18 can you continue?

  6. anonymous
    • one year ago
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    IGreen, i divided 18 by 1/3, and i got 6. What do i do now?

  7. anonymous
    • one year ago
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    IGreen, i divided 18 by 1/3, and i got 6. What do i do now?

  8. welshfella
    • one year ago
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    18 / 1/3 is not 6 when diving fractions invert the divisor and multiply |dw:1436368531569:dw|

  9. iGreen
    • one year ago
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    \(\sf 18 \div \dfrac{1}{3} \rightarrow 18 \times 3\)

  10. iGreen
    • one year ago
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    @Ms.Parris

  11. anonymous
    • one year ago
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    @iGreen Oh.. okay.. Well, i got 54.. I-Is that it..?

  12. welshfella
    • one year ago
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    yes

  13. anonymous
    • one year ago
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    @welshfella But what about the 1/2 thing?

  14. iGreen
    • one year ago
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    Yes, now do the same thing with 1/2. \(\sf 54 \div \dfrac{1}{2} \rightarrow 54 \times 2\)

  15. anonymous
    • one year ago
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    @iGreen Okay, i got 108.

  16. iGreen
    • one year ago
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    Yes, that's our answer.

  17. anonymous
    • one year ago
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    @iGreen Thank you, iGreen. You helped me a lot.

  18. iGreen
    • one year ago
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    No problem. \(\sf\huge\color{lime}{Welcome~to~OpenStudy!}\)

  19. anonymous
    • one year ago
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    @iGreen You're making me blush, oh my gosh. Thank you.

  20. iGreen
    • one year ago
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    \(\Huge\ddot\smile\)

  21. welshfella
    • one year ago
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    ??? am i missing something here?? i think the answer is 54

  22. welshfella
    • one year ago
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    startts with 54: - 27 goes into the bank then 1/3 of 27 = 9 goes to buying books so there is 18 dollars left

  23. anonymous
    • one year ago
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    @iGreen I need your help again. Maria put 1/5 of her money in the bank. She spent 50% of her remaining money on books. She has $10 left. How much money did she start with? I tried doing it but i failed. ._. Please help.

  24. iGreen
    • one year ago
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    Oh..you're right @welshfella I made a mistake..

  25. iGreen
    • one year ago
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    She spent 50% of it and was left with $10.. 10 * 2 = ?

  26. anonymous
    • one year ago
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    @iGreen 10 x 2 is 20.

  27. iGreen
    • one year ago
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    Yes, so she put $20 into the bank. $20 is 1/5 of her original amount, so divide. \(\sf 20 \div \dfrac{1}{5} \rightarrow 20 \times 5\)

  28. anonymous
    • one year ago
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    umm, 20 is 4/5 of her original amount.

  29. iGreen
    • one year ago
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    No..4/5 would be 80.

  30. anonymous
    • one year ago
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    @iGreen 20 x 5 is 100.

  31. iGreen
    • one year ago
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    Correct, that's our answer.

  32. iGreen
    • one year ago
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    Oh, wait..I think I made another mistake >.<

  33. anonymous
    • one year ago
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    @iGreen YAY!

  34. iGreen
    • one year ago
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    Lol

  35. iGreen
    • one year ago
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    Yeah, I did..@Venice-Gribbin was correct..20 is 4/5..

  36. anonymous
    • one year ago
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    Maria put 1/5 of her money in the bank. She spent 50% of her remaining money on books. She has $10 left. How much money did she start with? if she puts away 1/5th of her moneyshe has 4/5th's of her original amount. and spends 50 percent of it to be left with 10 dollars, so 10 is 2/5th's of the original amount. 10/2 is 5 and 5*5 is 25. Maria's original amount was 25 dollars.

  37. iGreen
    • one year ago
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    Correct^ For some reason, I kept looking at the question all the way at the top..lol.

  38. anonymous
    • one year ago
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    @iGreen i suggest 7-8 hours of sleep.

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