A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
81 is 120% of what number?
anonymous
 5 years ago
81 is 120% of what number?

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how did you get that?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0amu12, here is an easy way to think of percentage questions and fractions. Whenever you see the word "of" think of multiplication. So, 50% of 100 is, 50% * 100, which is 50. So, to answer your question, 120% of ? = 81 is written as 120% * ? = 81 we can also write it as 120/100 * ? = 81 Now, let's simplify it, 1.2 * ? = 81 In algebra to find an answer, we have to isolate the unknown right? So we have to isolate the question mark... how do we do that? We do that by moving 1.2 to the other side. We end up with ? = 81/2.1 so, we do some easy division, and we find the answer is 67.5 And you can check your work by plugging it back in. Good luck!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i multiplyed .820 by 21

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0beacuse ure finding 820%

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0still how do you do it? i dont get it ......

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That is actually incorrect, Hermella. They are not asking for 820% of 21, they are asking for what number multiply by 120% gives you 82. And 820% is not .82, it is 8.2 Please look at my post for detailed explanation, amu

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you are finding 820% so you multiply .825 by 21 because it is 825% of 21

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so what don't you get

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0amu what dont you get

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so i am still not getting how to solve it.....!!! ????

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yea so how exactly did you do it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i multiplyed .820 by 21
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.