jane had $30,000 part of which she invests 9% interest and the rest at 7%. if her income from 7% investment was $820 more than that from 9% investment, how much did she invest at each rate?

Question

calculusfunctions · Answer

First tell me how much you can do before I start helping you.

anonymous · Answer

tried solving the question

calculusfunctions · Answer

OK I'm going to walk through the steps with you. Please do as I say. First write an opening statement.

calculusfunctions · Answer

Please say something.

anonymous · Answer

ok

calculusfunctions · Answer

Let x represent the amount invested at 9% and y represent the amount invested at 7%.

Understand? Now tell me what the two equations should be.

anonymous · Answer

30000-x
x

calculusfunctions · Answer

Oh, have you not learned to work with two variables?

calculusfunctions · Answer

OK so then x can represent the amount invested at 9% and y can represent the amount invested at 7%. Thus what are the two equations?