Let a

Percent to fraction: x% = x/100

Percentage formula: Rate/100 = Percentage/base

Rate: The percent.

Base: The amount you are taking the percent of.

Percentage: The answer obtained by multiplying the base by the rate

In a proportion, the product of the extremes (ad) equal the product of the means(bc),

Thus, ad = bc

Discount = list price × discount rate

Sale price = list price − discount

Discount rate = discount ÷ list price

Sales tax = price of item × tax rate

Interest = principal × rate of interest × time

Tips = cost of meals × tip rate

Commission = cost of service × commission rate

s:length of one side

l: length

w: width

a, b, and c: lengths of the 3 sides

s: length of one side

l: length

w: width

b: length of base

h: length of height

b

h: length of height

s: length of one side

l: length

w: width

h: height

pi: 3.14

r: radius of sphere

base: length of the base of the triangle

height: height of the triangle

Height: height of the triangular prism

pi: 3.14

r: radius of the circle of the base

Height: height of the cylinder

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