Question

1-. On what sum of money lent out at 9% per annum simple interest for 6 years does the simple interest amount to 810 .

2 -. At what rate of interest per annum will a sum double itself in 8 years .

3-. In how many years will rupee 870 amount to rupee 1044 the rate of interest being 5% .

4-. A and B together can do a job in 12 days. B alone can finish it in 28 days . In how many days can A alone finish the work.

5-. Radha can do a job in 20 days . How much work will be finished in 12 days.
*Please guys answer immediately*​

Answer 1

Answer:

please refer the image for explaination.I got only 3 answers