Given:
John invest $5,000 in one account and $8,000 in an account paying 4% more in interest.
Total interest in one year = $1230
To find:
The rates of the investments.
Solution:
Let x% be the rate of interest on investment $5000.
Then, (x+4)% is the rate of interest on investment $8000.
Total interest is $1230. So,





Divide both sides by 130.


Now,


Therefore, $5,000 is invested at 7% and $8,000 is invested at 11%.
the last pair is statements are true.
Answer:
-4
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
10 ÷ (2x)
x = -5/4
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em>: 10 ÷ (2(-5/4))
- Multiply: 10 ÷ -5/2
- Divide: -4