Answer:

A.585

Step-by-step explanation:

18months = 1.5 years or 1 year & 6 months

I = Prt

I = 6500*0.06*1.5

I = 585

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But if we are taking into account the "yearly" interest, it means it wouldn't have an interest until the end of the year.

So 1 year & 6 months is counted as 1 year only.

So, time = 1 year only

I = 6500*0.06*1

I = 390

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