Practice Flashcards: PSAT Data — percentages, and which number sits underneath | Zestly

Question 1

Identifying the base

Accepted Answer

The base is the original value to which the percentage is applied, typically the value before any increase or decrease occurred.

Question 2

Percent change formula

Accepted Answer

$	ext{Percent Change} = \frac{	ext{Final Value} - 	ext{Original Value}}{	ext{Original Value}} 	imes 100$

Question 3

Successive change logic

Accepted Answer

Successive changes are multiplicative because the second percentage is applied to the new value resulting from the first change, not the original base.

Question 4

Recovering an original amount

Question 5

Meaning of $40$ percent more than

Question 6

Why $20$ percent rise then $20$ percent fall fails

Question 7

Percent of a percent

Question 8

Base for finding original amount

Question 9

Multiplicative factor for $15$ percent decrease

Question 10

Multiplicative factor for $15$ percent increase

Question 11

Common mistake in percent change