In: Finance
if you invest $20 in a savings account tha pays 5% interest how much money will you have in 4 years if you make no additional deposits
| A/c balance after 4 years | PV×(1+r)^n | |
| Here, | ||
| A | Interest rate per annum | 5% | 
| B | Number of years | 4 | 
| C | Number of compoundings per per annum | 1 | 
| A÷C | Interest rate per period ( r) | 5.0% | 
| B×C | Number of periods (n) | 4 | 
| Present value (PV) | $ 20 | |
| A/c balance after 4 years | $ 24.31 | |
| 20×(1+5%)^4 |