1def Interest():
2 principal = input('Enter the principal: ')
3 rate = input('Enter the rate: ')
4 time = input('Enter the time: ')
5 Simple = ( (int(principal) * int(rate) * int(time)) / int('100')) #interest formula
6 print('S.I. = ' + str(Simple))
7
8def Principal():
9 rate = input('Enter the rate: ')
10 time = input('Enter the time: ')
11 interest = input('Enter the simple interest')
12 principal = ( (int('100') * int(interest)) / (int(rate) * int(time))) #principal formula
13 print = ('Principal = ' + str(principal))
14
15def Rate():
16 time = input('Enter the time: ')
17 interest = input('Enter the simple interest')
18 principal = input('Enter the principal: ')
19 rate = ( (int('100') * int(interest)) / (int(principal) * int(time))) #rate formula
20 print = ('Rate = ' + str(rate))
21
22
23def Time():
24 interest = input('Enter the simple interest')
25 principal = input('Enter the principal: ')
26 rate = input('Enter the rate: ')
27 time = ( (int('100') * int(interest)) / (int(principal) * int(rate))) #time formula
28 print = ('Time = ' + str(time))
29
30
31
32question = input('What do you want to find: ')
33
34if question == 'interest': #calls functions if input = the specified string
35 Interest()
36
37elif question == 'principal':
38 Principal()
39
40elif question == 'rate':
41 Rate()
42
43elif question == 'time':
44 Time()
45
46else:
47 print('That is not a valid value mate. ')
48