269,318 views
38 votes
38 votes
How long (to the next whole year) will it take

money to double if it is invested at 20% compounded
anually?

User Kalinka
by
2.9k points

1 Answer

17 votes
17 votes

Explanation:

2x = x1.2^n

2 = 1.2^n

log1.2(2) = n

log10(2)/log10(1.2) = n = 3.801784017...

so, rounded to the next whole year it takes 4 years.

User Mymmaster
by
2.7k points