While15. The initial deposit in the bank is 1000 rubles. Every month the size of the contribution increases by P percent of the available amount (P is a real number, 0 < P < 25). For this P, determine, after how many months the deposit size will exceed 1100 rubles, and output the found number of months K (integer) and the total deposit size S (real number).

Solution in Python 3:

import random

S_start = 1000
S_end = 1100

P = random.randrange(10,260)/10
#P = 7
print('P = ', P)
coef = 1 + P/100
print("Initial Amount = {0}, Percent = {1}, Coef = {2}".format(S_start,P,coef))
K = 0
S = S_start
while S < S_end:
    S *= coef
    K += 1
    print("K = {0}, S = {1}".format(K,S))

print()
print("Months = {0}, Final Amount = {1}".format(K,S))