Question

In what time will asum of money double itself at 15percrnt per annum

Answer 1

Lets take a principle - 1000rs

Interest is 15 percent

Then,

$(1000 \times 15 \times time(years)) \div 100$
We need to find the time when the principle will be doubled,

Then,

150 * x (by the equation above) = 1000

By solving the equation stated above, we get,

x = 20/3