Question

Frank has $8000 that he plans to split into two investments. He wrote the following two equations to represent the interests he will earn from each of the two investment options.

2000 A+ 6000B=520
400A+400B=480
Determine the interest rates, A and B as percentages

Answer 1

Answer:

Step-by-step explanation:

I still think your equations are wrong...

4000/4000 not 400/400 since the total investment is to be $8000

not $800

Step-by-step explanation:

2000 A+ 6000B=520

4000A+4000B        =480

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2000 A+ 6000B=520

-2000A - 2000B   =-240  

4000B = 280

B=7%

A=5%