A sum of ₹ 80,000 is invested at 6% p.a. at simple interest for the first year, then 8% p.a. for the next 2 years (still simple interest). What is the total interest earned over the 3 year period?

What is the compound interest earned on Rs. 80,000 at 40% per annum in one year, compounded quarterly?

What is the rate of simple interest for the last 5 years if the sum of ₹ 480 becomes ₹ 792 in 11 years and the rate of interest for the first 6 years is 5%?

An amount becomes its 3 times in 20 years. What is the rate of simple interest per annum?

Consider the following statements:

If a sum of money is lent at simple interest, then

(A) money gets doubled in 5 years if the rate of interest is $16\frac{2}{3}\%$.

(B) money gets doubled in 5 years if the rate of interest is 20%.

(C) money becomes four times in 10 years if it gets doubled in 5 years.

of these statements,

Choose the correct answer from the options given below:

In how many years will a sum of money double itself at 12.5% p.a., at simple interest?

If a certain sum becomes three times in 4 years at compound interest, then in how many years, will it become 9 times?