Help me please Algebra 1

Question

If I put $41.66 as an answer for Paula originally planned to donate $50 each month. After reviewing her budget, she despises that she must reduce her original planned monthly donation of $50 so that she will be in the Silver category, would it be right?

The silver category is >100 and <500

Answer 1

I assume the required donation in Silver category is between $100 and $500 annually.

Then, Monthly require donation should be between $100/12 and $500/12.

That is between $8.33..... and $41.66....., so to stay in Silver category the donation should be more than $8.33 and less than $41.66.