Percent Word Problems Flashcards
1
Q
What is x%?
A
x/100
2
Q
x percent of y can be expressed as?
A
x/100(y)
3
Q
x is what percent of y can be expressed as?
A
x/y (100) or x = a/100(y)
4
Q
20 is reduced by 10% new value =
A
20 * (100-20)/100
5
Q
20 is increased by 100% new value =
A
20 * (100 + 100)/ 100
6
Q
a number x marked up by 10% and then marked down by 20%. so now x =?
A
x (110/100) (80/100)
7
Q
percent change =
A
(new value - old value / old value) *100
8
Q
x = 100, x is decreased by 20%. what % increase is required to get x to its original value?
A
% increase = (100 - 80/ 80) * 100
9
Q
Percent profit = ?
A
Revenue - Cost / cost * 100
