Percent
What is the percent formula?
How much is 15 percent of 20? correct answers Percent Formula:Part = Percent x Whole
For example, 15% of 20 is:
15/100∗20 = 300/100=3
Percent 2
What is the formula for percent change?
If Jack got a raise from $15 per hour to $18
per hour,...
GMAT CLUB || A Verified A+ Pass.
Percent
What is the percent formula?
How much is 15 percent of 20? correct answers Percent Formula:Part = Percent x Whole
For example, 15% of 20 is:
15/100∗20 = 300/100=3
Percent 2
What is the formula for percent change?
If Jack got a raise from $15 per hour to $18
per hour, what was the percent increase? correct answers Percent Change Formula:
𝑎𝑚𝑜𝑢𝑛𝑡 𝑜𝑓 𝑐h𝑎𝑛𝑔𝑒/𝑜𝑟𝑖𝑔𝑖𝑛𝑎𝑙 𝑎𝑚𝑜𝑢𝑛𝑡× 100%
Jack's Raise:
(18 − 15)/15 × 100% = 3/15 × 100% = 100/5 = 20%
! Make sure you use the original amount (15), not
the new one (18)
Percent 3
If the production of hybrid cars tripled last year, by how many percent did it increase?
a.100%
b.200%
c.250%
d.300%
e.333% correct answers The correct answer is B - increased by 200%
For example, if production was 10 cars, and it
tripled to 30 cars, the increase was 20 cars, which
is 200% of 10
Percent 4
50% of 25 is 25% of which number? correct answers There are 2 solutions to this problem: Long one: 50% of 25 is 12.5 12.5 *100 = x * 25 x = 50 Short one but a harder to come up with: 50% * 25 = x * 25% 50 = x
Odd/Even Rules
Check your knowledge of Odd/Even rules Odd + Odd = ? Odd - Even = ? Even + Odd = ? Odd x Odd = ? Odd ÷ Even = ? Odd x Even = ?
Hint: try picking numbers correct answers Odd + Odd = 1+ 1 = 2 (Even) Odd - Even = 3 - 2 = 1 (Odd) Even + Odd = 2 + 1 = 3 (Odd) Odd x Odd = 3 x 3 = 9 (Odd) Odd ÷ Even = 3 ÷ 2 = 1.5 (Not an integer!) Odd x Even = 3 x 2 = 6 (Even)
Odd/Even Rules 2
Is 0 odd or even? correct answers 0 (zero) is Even It is also not positive or negative- it is neutral
Odd/Even Rules 3
If b is an odd number, which of the following
must be even?
A. 2𝑏 − 3
B. (𝑏-1)/2
C. (𝑏/2)− 1
D. 𝑏^2 + 2
E. 2𝑏 + 2 correct answers Use the "plug numbers" method to check each
answer choice. Let's take 1:
A. 2*1 - 3 = -1 (Odd)
B.(1-1)/2= 0 (Even) - however, just in case, lets try 3.
(3-1)/2= 1 (Odd). It usually is a good idea to run
through 2 different numbers if you get zero or similar
C.(1/2)−1 = −1/2(not an intenger)
D. 1 + 2 = 3 (Odd)
E. 2 + 2 = 4 (Even)
Odd/Even Rules 4
Is A+B+C even or odd?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller FullyFocus. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
