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Identifying Percent Amount and Base

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    We are asked to identify the percent amount and base in this problem.
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    They ask us 150 is 25% of what number?
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    So another way to think about it is 25% times some number, so I will do 25% in yellow.
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    And 25% times some number is equal to 150.
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    So the percent is pretty easy to spot. We have a 25% right over here.
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    So, this is going to be the percent. That is the percent.
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    And we are multiplying the percent times some base number. So this right over here is the base
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    and we have percent times the base is equal to some amount.
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    And you can try to solve this in your head.
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    This is essentially saying 25% times some number is equal to 150.
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    If it helps, we can rewrite this as 0.25 (which is the same thing as 25%)
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    0.25 times some number is equal to 150.
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    And one interesting thing to think about is "should this number be larger or smaller than 150"?
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    Well, if we only take 25% of that number, if we only take 25/100 of that number
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    If we only take 1/4th of that number, because that's what 25% is, we get 150. So this number needs to be larger than 150.
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    If fact, it has to be larger than 150 by 4.
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    And to actually figure out what this number is
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    we can actually multiply, since what is on the left hand side is equal to what is on the right
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    hand side. If we want to solve this, we can multiply both sides by 4.
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    If we say, look, we have some value over here and we're going to multiply
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    it by 4 in order for it to still be equal we would have to multiply 150
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    times 4.
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    4 times 0.25 (or 4 times 25% or times 1/4th), this is just going to be 1.
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    And we are going to get our number is equal to 150 times 4.
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    Or equal to 600.
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    And that makes sense. 25% of 600 is 150.
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    1/4th of 600 is 150.
Title:
Identifying Percent Amount and Base
Description:

u5_l2_t1_we1 Identifying Percent Amount and Base

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Video Language:
English
Duration:
02:32
Melanie Karow edited английски език subtitles for Identifying Percent Amount and Base
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