If 120 is 15 percent of something how do you find the total?
回答 (8)
2009-06-05 9:32 am
✔ 最佳答案
= 120/0.15= 800
Answer: 800
Checking:
= 800 * 15%
= 800 * 15/100
= 800 * 3/20
= (800/20) * 3/(20/20)
= 40 * 3
= 120
2009-06-05 4:32 pm
The way I would start solving this problem is by dividing both 120 and 15 by 3 and getting 40 and 5.
That means that 40 is 5% of something.
Then I would multiply both by 20 making it 800 and 100%.
800 would then be your answer.
That means that 40 is 5% of something.
Then I would multiply both by 20 making it 800 and 100%.
800 would then be your answer.
2009-06-05 10:03 pm
So, 120 is 15 percent of what number? Check out my Math Variety blog posts on how to solve percentage problems like this. You’ll find a step-by-step method on how to do these problems, practice problems, and solutions. Click on ads/links of interest.
http://mathvariety.blogspot.com/2009/04/percentage-problems.html
http://mathvariety.blogspot.com/2009/05/percentage-problems-practice-problems.html
http://mathvariety.blogspot.com/2009/05/percentage-problems-solutions-to.html
I also have an eHow article on this topic at http://www.ehow.com/how_4816051_solve-percentage-problems.html if you want to read it.
Start with x/100=is/of. Here, x=15 (percent), is=120 ("120 is"), of=unknown ("of something/of what number"), so:
15/100=120/of
Cross multiply:
15*of=100*120
15*of=12,000
of=800 (answer)
http://mathvariety.blogspot.com/2009/04/percentage-problems.html
http://mathvariety.blogspot.com/2009/05/percentage-problems-practice-problems.html
http://mathvariety.blogspot.com/2009/05/percentage-problems-solutions-to.html
I also have an eHow article on this topic at http://www.ehow.com/how_4816051_solve-percentage-problems.html if you want to read it.
Start with x/100=is/of. Here, x=15 (percent), is=120 ("120 is"), of=unknown ("of something/of what number"), so:
15/100=120/of
Cross multiply:
15*of=100*120
15*of=12,000
of=800 (answer)
2009-06-05 4:51 pm
120 ÷ 15%
= 120 ÷ 15/100
= 120 x 100/15
= 12000/15
= 800
= 120 ÷ 15/100
= 120 x 100/15
= 12000/15
= 800
2009-06-05 4:31 pm
120/x=15/100
12000=15x
x=800
12000=15x
x=800
2009-06-05 4:30 pm
15 / 100 = 120 / ? so ?= 120x100/15
2009-06-05 4:27 pm
how many 15's are in 100?
so, 100 devided by 15
then times the answer by 120
so, 100 devided by 15
then times the answer by 120
2009-06-05 4:27 pm
120/15 will give you 1 pecent so multiply that with 100 to find the total
the answer is 800
hope that helps
the answer is 800
hope that helps
收錄日期: 2021-04-25 22:19:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090605012154AAraUfL