Percents Flashcards
1
Q
How to determine % increase/decrease.
A price rises by 10% one year and by 20% the next. Whats the combined % increase?
A
year one: $100 = (10% of 100)= 100+10=110
Year two: 110+ (20% of 110) =110 +22 = 132
from 100 to 132 there is a 32% increase
2
Q
How to find the Original whole before % increase/decrease
After decreasing by 5%, the population is now 57,000. What was the original population?
A
0.95 X (original population) =57,000
divide both sides by 0.95
original pop=57,000+ 0.95 =60,000
