Work the rule of 72

Exercise and reference answers

Questions

1. Answer

   9

   Question

   Growth at 8% a year. Years to double?

2. Answer

   12

   Question

   Growth at 6% a year. Years to double?

3. Answer

   18

   Question

   Growth at 4% a year. Years to double?

Instructions

Type the approximate number of years to double.

Explanation