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THE POWER OF INTEREST. DAVE RAMSEY'S INVESTMENT CALCULATOR. Interest is the fee for the use of money over time. What are some items you may loan to a friend?. What is the opportunity cost when loaning something to someone else?. The owner does not get to use the item for a period of time.
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What is the opportunity cost whenloaning something to someone else? The owner does not get to use the item for a period of time.
A saver is paid when they allow a borrower to use their money for a period of time. • Interest is paid by a borrower and received by a lender or a saver. Who pays interest? Who receives interest?
Double A Penny For One Month—How Much At End? “I do not believe Dave Ramsey’s claim.” Go to Excel
simple interest • Paid on the amount of the original investment and does not change over time. • A1 Type the word Simple • A2 Type in 100 • A3 = A2 + 5 • Drag
compound interest • Paid on the amount of the original investment and all accrued interest. • C1 Type Compound • C2 Type 100 • C3 = C2 * 1.05
Add $2,000 starting with a $100 investment • E1 Title Add $2,000 per year • E2 Type 100 • E3 = (E2 * 1.05) + 2000
Rule of 72 How many years to double your money? • Divide 72 by the Interest Rate • Interest rate is 4 72/4 = 18 years. • Interest rate is 18 72/18 = 4 years