This is subtraction an the answer would be 6
The annual interest rate of her investment would be = 4%
<h3>Calculation of annual interest rate</h3>
The principal amount invested= $500
The period of investment= 4years
The interest received= $80
The interest rate= ?
To calculate the interest rate use the formula,
SI = P×T×R/100
80 = 500 × 4 ×R/100
Make R the subject of formula,
R= 80 ×100/500×4
R= 8000/2000
R= 4%
Therefore, the annual interest rate of her investment would be = 4%.
Learn more about simple interest here:
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Hello!
To find how much less Marvin pays per liter using his loyalty card, we can subtract the discounted value from the original value.
1.679 - 1.439 = 0.24
Therefore, Melvin pays 0.24 dollars less per liter using his loyalty card.
Answer:
11) x=10
12) x=25
Step-by-step explanation:
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