Question

9. In what time will a sum of money double itself at 5% per annum?​

Answer 1

Answer:

100 si /x,where x= sum and si = simple interest

Step-by-step explanation:

let the sum be x

now,

si = ptr/100

=2x × t× 5 /100

10xt/100

xt/10

now

xt/100=si

xt=100si

t=100si /x

this your ANSWER