Respuesta :
The principal was $600.
Explanation:
Find principal by using the formula , where I is interest, P is total principal, i is rate of interest per year, and t is total time in years.
In this example I = $72, i = 4% and t = 3 years, so
Answer: 173,200
Step-by-step explanation:
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Interest= Principal x Rate x Time
Interest = ($400)($72)(6)= 172,800+400= 173,200
