When is 365 days a year and 360 days a year? I mean when it comes to interest

When is 365 days a year and 360 days a year? I mean when it comes to interest

When a bank loans, the conversion relationship between annual interest rate, monthly interest rate and daily interest rate is: annual interest rate = daily interest rate * 360 monthly interest rate = daily interest rate * 30 = annual interest rate / 12. If you have a loan of 1 million yuan and the loan contract interest rate is 12% (for example), if the annual interest calculated by us is 100 * 1

Is a year 360 days or 365 days

The interest of the bank is 360 days,
A normal year is 365 days,
Leap year is 366 days a year!

One eighth x = (360-x) * one tenth + 9
Solve the equation (Note: there are decimals)

One eighth x = (360-x) * one tenth + 9
x/8=36-x/10+9
x/8+x/10=36+9
9x/40=45
x=45*40/9
x=200
Do not understand can ask, help please adopt, thank you!