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💰 Interest & Money
Interest & Money Formulas
Simple and compound interest. · 6 formulas
Simple Interest
I = P × R × TInterest = Principal × Rate × Time
Example
I = 100
Amount (Simple Interest)
A = P + IAmount = Principal + Interest
Example
1100
Compound Interest
A = P(1 + R)ᵗAmount grows with compounding
Example
1102.50
Discount
Discount = (rate/100) × priceMoney saved from a percent off
Example
30
Sale Price
Sale = Price − DiscountWhat you pay after discount
Example
170
Profit Percent
Profit% = (Profit / Cost) × 100Profit relative to cost price
Example
25%