#1 Most Difficult COMPASS Question: Percentages

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[antoniowright0]

could you show or tell me another way to do the 1st problem

[mometrix]

@antoniowright0

Sorry I only have room to put this in 2 parts. This is part 1:

Another way to think about it is using $1.00. We know that 20% of $1.00 is 20 cents. If you take 20 cents away, you are left with 80 cents. If you divide 80 cents into 4 equal parts, that is also the amount that was taken away: 20 cents. If you think about it this way when using larger numbers, in this case $1600, you can solve it the same way. We know that 80% of the regular price is $1600.

[mometrix]

@antoniowright0 Part 2:

So if we take 80% and divide it by 4, we can find the missing 20%, which in this case is $400. We can then add $1600 and $400 together to complete our answer of $2000. A lot of people find it easier to think of $1.00 broken down into cents instead of working with percentages directly. 

[sarge77318]

@antoniowright0 You could just do it like 80% / 100% = $1600 / X, then multiply 1600 x 100, divided by 80, which you come up with 2000.

[kookoo78]

@mometrix How did you come up with the number 4 or better yet why is it split up into 4 parts?