<Tr> <Td> 4% </Td> <Td> 17.673 </Td> <Td> 18.000 </Td> <Td> 17.500 </Td> <Td> 17.325 </Td> <Td> 17.667 </Td> <Td> 17.679 </Td> </Tr> <Tr> <Td> 5% </Td> <Td> 14.207 </Td> <Td> 14.400 </Td> <Td> 14.000 </Td> <Td> 13.860 </Td> <Td> 14.200 </Td> <Td> 14.215 </Td> </Tr> <Tr> <Td> 6% </Td> <Td> 11.896 </Td> <Td> 12.000 </Td> <Td> 11.667 </Td> <Td> 11.550 </Td> <Td> 11.889 </Td> <Td> 11.907 </Td> </Tr> <Tr> <Td> 7% </Td> <Td> 10.245 </Td> <Td> 10.286 </Td> <Td> 10.000 </Td> <Td> 9.900 </Td> <Td> 10.238 </Td> <Td> 10.259 </Td> </Tr>

In how many years will the investment to double in value at 5 simple interest rate