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A $20,000 deposit was placed in a bank paying 5.75% interest compounded quarterly. After 12 months, how much interest was earned.

User FreePender
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P = 20,000 \\ R = 5.75 \\ T = 1 \\ I = (PRT)/(100) \\ = (20000 * 5.75*1)/(100) \\ = 115000/100 \\ = 1150 $
User Wim Deblauwe
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After 1 year, the bank paid (5.75/4) percent, 4 times.

The value of the investment is (20,000) times (1 + 0.0575/4) to the 4th power.

(1 + 0.0575/4) = 1.014375

That number to the 4th power is 1.05875... (rounded)

The interest alone is (20,000) times (0.05875...) = $1,175.04
User Si
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