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Math Help - not sure how to devide this percent increase?

  1. #1
    Newbie Waveform's Avatar
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    Question not sure how to devide this percent increase?

    Hi

    I forgot how to do this, you know how sometimes you see in a news paper article might read;
    a polotition increased education spending by 1.5 billion, a jump of about 23 percent.

    My question is: If I wanted to know what the spending was before the increase, how do I calculate this? If 1.5 billion is a 23 percent increase do I divide something?
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by Waveform View Post
    Hi

    I forgot how to do this, you know how sometimes you see in a news paper article might read;
    a polotition increased education spending by 1.5 billion, a jump of about 23 percent.

    My question is: If I wanted to know what the spending was before the increase, how do I calculate this? If 1.5 billion is a 23 percent increase do I divide something?
    If I'm reading this correctly the 23% increase is equal to $1.5 billion. So 1.5 billion is 23% of what number?

    (23/100)x = 1.5 billion

    x = (100/23)*1.5 billion = 6.52 billion

    So the initial spending was $6.52 billion and it increased by $1.5 billion, or 23% of the $6.52 billion.

    -Dan
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  3. #3
    Newbie Waveform's Avatar
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    Thumbs up

    Thanks Dan, that was it!
    I don't understand why I cant see this stuff myself. do you have a picture in your head when you do this kind of word problem math?
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  4. #4
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by Waveform View Post
    Thanks Dan, that was it!
    I don't understand why I cant see this stuff myself. do you have a picture in your head when you do this kind of word problem math?
    Just lots and lots of practice. I have never been able to come up with a "standard" way to approach this kind of word problem.

    -Dan
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