Question

if at simple interest a sum doubles after 12 yrs what is the rate of interest per annum ?​

Answer 1

Answer:

12+12=24 is the answers

Answer 2

Answer:

8.33%

Step-by-step explanation:

suppose sum is 100 unit and after 12 years its become 200 unit

now interest is 100 unit also and its 12 years interest so 1 year interest is 100/12 = 8.33.. and its on 100 unit so its also rate of interest.