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Posted by on Thursday, October 11, 2012 at 6:50am.

David has $5 in his wallet. This was 10% of the amount that he received from his mother. Find the total amount of money that David received from his mother.

35% of the number of books Ibrahim owns are fiction boos, find:
a.) the total number of books he owns.
b.) the number of non-fiction books he owns.

Please show me your complete workings. Thank you very much.

  • Maths Percentage (6th Grade) - , Thursday, October 11, 2012 at 8:00am

    non-algebraic way:

    5% = $5
    so 1% = 5/5 = $1
    100% = 100(1) = $100

    algebraic way:
    .05x = 5
    x = 5/.05 = 100

    Do your second question in the same way.

  • Maths Percentage (6th Grade) - , Monday, January 2, 2017 at 8:09am

    100 / 10 = 10
    5 x 10 = 50

    The answer is $50

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