Question

What is the doubling time of prices which are increasing by 5 percent per year? doubling time =(include units)

Answer 1

What is the doubling time of prices which are increasing by 5 percent per year:

Since it is doubling, it must increase by 100%.

100 divided by 5 = 20

1 year ----> 5 %

x ------> 100 %

$x=\frac{100}{5}=20$

$100\div5=20\text{yrs}$

Therefore the doubling time = 20yrs