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Math Help - Percentage Problem!

  1. #1
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    Percentage Problem!

    Q: The length of a rod is 0.45m. It expands to a length of 0.47m.

    Find the expansion as a percentage of its original length.

    ??? Please help if possible.
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  2. #2
    Senior Member vincisonfire's Avatar
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     \frac{\text{initial length}}{\text{final length}}=\frac{0.45}{0.47} = 95.745 \%
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  3. #3
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    Thumbs up

    It seems too simple, thanks though!
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  4. #4
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    I think percentage increase in length

    =[change in length/orig. length] X100

    so, it should be=[0.02/0.45] X 100

    am I correct??
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  5. #5
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    Ans- 4.44%
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  6. #6
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    Talking

    Thank you so much sumit2009, you've just confirmed the answer for me.

    I thought it was 4.44%

    nice one!
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