Not getting accurate values

Question

Like for 50% of 100 it's giving 49.90 not 50%

https://code.sololearn.com/WyjLBSJa4Twu/?ref=app

Answer 1

Modified a bit:
https://code.sololearn.com/WbKld6H5ohPC/?ref=app

Answer 2

When you add 0.1, the value of the isn't exactly the number+0.1
https://www.sololearn.com/discuss/2353051/?ref=app

Answer 3

Arnesh Thanks

Answer 4

Welcome. :-)