book Maths Puzzle Numerical Ability

I am looking for help on this problem any help i would really be thankful

Elaine was charged $195 interest for 1 year on a $1000 credit card balance. What was the monthly interest rate?

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I have three word problems that I'm stuck on could you help me please?

1. Connor has nickels, dimes, and quarters. He has a total of $25.20. He has twenty-one fewer nickels than I need help solving multi-step inequalities. Like ((( -3f-7>-f+9)))