13. Find the current value of 100 thousand sums for a simple interest rate with a discount rate of 8% after one year?

13. Find the current value of 100 thousand sums for a simple interest rate with a discount rate of 8% after one year?
D = M * r * t
D = 100 000 * 0.08 * 1
D = 8 000
P = M – D
P = 100 000 – 8 000 = 92 000
Answer: the current value is 92 000 sums

14. How much money does a farmer have to put in the bank at a rate of 25% to get 450,000 sums in 2 years?

FV = PV(1+r)^n
450 000 = PV(1+0.25)^2
450 000 = PV * 1.5625
PV=288 000
Answer: Present value is 288 000 sums

15. If the annual interest rate is 6%, how long will it take for the amount to increase 3 times when the interest payment is made every six months?