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makkiz [27]
3 years ago
10

Can u do question b pls​

Mathematics
1 answer:
Blababa [14]3 years ago
3 0

Answer:     a) $481.62      b) $16,569.76

<u>Step-by-step explanation:</u>

The formula for compound interest is:    A = P(1 + r)^t     where

  • A is the accrued amount (balance)
  • P is the principle (initial deposit)
  • r is the rate (convert percentage into a decimal)
  • t is the time (number of years)

Given: P = 3000, r = 1.15% (0.015), t = 10

A = 3000(1 + 0.015)^{10}\\\\\\A = 3000(1.015)^{10}\\\\\\A = 3,481.62

Interest Earned = accrued amount - principle

                          = 3,481.62 - 3,000

                           =   481.62

******************************************************************************************

I couldn't remember the formula so I created a table:

\begin{array}{c||l|c||r}\underline{Jan\ 1}&\underline{Interest\ Earned}&\underline{Deposit}&\underline{Balance}\\2019&0&3000&3,000.00\\2120&3000(1.015)&1200&4,245.00\\2121&4245(1.015)&1200&5,508.68\\2122&5508.68(1.015)&1200&6,791.31\\2123&6791.31(1.015)&1200&8,093.17\\2124&8093.17(1.015)&1200&9,414.57\\2125&9414.57(1.015)&1200&10,755.79\\2126&10755.79(1.015)&1200&12,117.13\\2127&12117.13(1.015)&1200&13,498.88\\2128&13498.88(1.015)&1200&14,901.37\\2129&14901.37(1.015)&1200&16,324.89\\\end{array}

2130  || 16324.89(1.015)  |       0      ||  16,569.76

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