At 6.3 percent interest, how long does it take to double your money? (do not round intermediate calculations and round your answer to 2 decimal places, e. g., 32.16.) length of time years at 6.3 percent interest, how long does it take to quadruple it? (do not round intermediate calculations and round your answer to 2 decimal places, e. g., 32.16.) length of time years

Using a formula from this page: https://www.1728.org/compint2.htm

Years = {log(total) -log(Principal)} ÷ log(1 + rate)

To DOUBLE the money: We'll say total = $200 and principal = $100

Years = {log (200) - log (100)} / log (1 + .063)

Years = (2.3010299957 - 2) /  0.026533264523

Years = .3010299957 / 0.026533264523

Years = 11.3453810193

Years = 11.35 (rounded)

To QUADRUPLE:

Years = {log (400) - log (100)} / log (1 + .063)

Years = (2.6020599913 - 2) /  0.026533264523

Years = .6020599913 / .026533264523

Years = 22.6907620349

Years = 22.69

Basically, it is 2 times the number of years for doubling.

Step-by-step explanation: