THEME 1 FORMULAS Flashcards
1
Q
Percentage change increase
A
Increase equals new number take away original number
increase divided by original number x one hundred
2
Q
Percentage change decrease
A
decrease equals original number take way new number
decrease divided by original number x one hundred
3
Q
THEME ONE: PED
A
change in quantity demanded divided by change in price
greater than minus one equals elastic
lower than minus one equals inelastic
4
Q
THEME ONE: YED
A
change in quantity demanded divided by change in income
positive figure less than one equals normal good
positive figure more than one equals luxury good
negative figure equals inferior good
5
Q
THEME ONE: Market Share
A
total sales of firm divided by total sales in market x one hundred