contestada

3. How much interest does $5300 earn at a rate of 2.8% interest compounded quarterly after 6
months??

Respuesta :

Answer:

The interest is [tex]I=\$74.46[/tex]

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

[tex]A=P(1+\frac{r}{n})^{nt}[/tex]  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

[tex]t=6/12=0.5\ years\\ P=\$5,300\\ r=0.028\\n=4[/tex]  

substitute in the formula above  

[tex]A=5,300(1+\frac{0.028{4})^{4*0.5}[/tex]

[tex]A=5,300(1.007)^{2}[/tex]  

[tex]A=\$5,374.46[/tex]  

Find the interest

[tex]I=A-P[/tex]

substitute

[tex]I=\$5,374.46-\$5,300=\$74.46[/tex]

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