Finite Math Examples

p = 9000

$p = 9000$ ,

r = 2 %

$r = 2 %$ ,

t = 4

$t = 4$

Step 1

Simple interest is calculated on the original principal only. Accumulated interest from prior periods is not used in calculations for the following periods.

i = p \cdot r \cdot t

$i = p \cdot r \cdot t$

Step 2

Solve the equation for

i

$i$ .

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Step 2.1

Remove parentheses.

i = p \cdot r \cdot t

$i = p \cdot r \cdot t$

Step 2.2

Multiply

p r

$p r$ by

t

$t$ .

i = p r t

$i = p r t$

i = p r t

$i = p r t$

Step 3

Substitute the known values into the formula.

i = (9000) \cdot (2 %) \cdot (4)

$i = (9000) \cdot (2 %) \cdot (4)$

Step 4

Simplify the right side.

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Step 4.1

Simplify

(9000) \cdot (2 %) \cdot (4)

$(9000) \cdot (2 %) \cdot (4)$ .

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Step 4.1.1

Convert

2 %

$2 %$ to a decimal.

i = 9000 \cdot 0.02 \cdot 4

$i = 9000 \cdot 0.02 \cdot 4$

Step 4.1.2

Multiply

9000 \cdot 0.02 \cdot 4

$9000 \cdot 0.02 \cdot 4$ .

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Step 4.1.2.1

Multiply

9000

$9000$ by

0.02

$0.02$ .

i = 180 \cdot 4

$i = 180 \cdot 4$

Step 4.1.2.2

Multiply

180

$180$ by

4

$4$ .

i = 720

$i = 720$

i = 720

$i = 720$

i = 720

$i = 720$

i = 720

$i = 720$

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