Answer:
3% -23.33 years
4%-17.5 years
5%-14 years
Step-by-step explanation:
The rule of 70 is of the view that an economy would double its current performance in the coming years depicted by number 70 divided by its projected growth rate.
If the economy is growing at rate 3% growth rate,the economy would double its output in 23.33 years' time (70/3)
While using a growth rate of 4%,the economy would double its effort in 17.5 years' time(70/4) and finally using a growth rate of 5% it would double its effort in 14 years' time(70/5)