Question 1
Find the interest. All rates are annual interest rates.
Principal $400
Rate 5%
Time 1 year
Incorrect answer A. $10
Correct answer B. $20
Incorrect answer C. $40
Incorrect answer D. $200Find the interest. All rates are annual interest rates.
Principal $1,000
Rate 8.5%
Time 3 years
Correct answer A. $255
Incorrect answer B. $170
Incorrect answer C. $22.5
Incorrect answer D. $17
Find the interest. All rates are annual interest rates.
Principal $200
Rate 9%
Time one-half year
Correct answer A. $9
Incorrect answer B. $18
Incorrect answer C. $36
Incorrect answer D. $45Find the interest. All rates are annual interest rates.
Principal $20,000
Rate 12%
Time 3 months
Incorrect answer A. $240
Correct answer B. $600
Incorrect answer C. $800
Incorrect answer D. $7,200You borrow $1,200 at a rate of 4.5% for a period of 6 months. How much will you repay at the end of 6 months?
Incorrect answer A. $27
Incorrect answer B. $54
Incorrect answer C. $1,173
Correct answer D. $1,227
And what is the question with this?
For Question 1:
Principal: $400
Rate: 5%
Time: 1 year
To find the interest, use the formula: Interest = Principal * Rate * Time
Plugging in the values, we get: Interest = $400 * 0.05 * 1 = $20
So, the correct answer is B. $20.
For the next question, Question 2:
Principal: $1,000
Rate: 8.5%
Time: 3 years
Using the same formula, Interest = Principal * Rate * Time, we get: Interest = $1,000 * 0.085 * 3 = $255
So, the correct answer is A. $255.
Moving on to Question 3:
Principal: $200
Rate: 9%
Time: one-half year (or 0.5 years)
Applying the formula, Interest = $200 * 0.09 * 0.5 = $9
Therefore, the correct answer is A. $9.
For Question 4:
Principal: $20,000
Rate: 12%
Time: 3 months (or 0.25 years)
Using the formula, Interest = $20,000 * 0.12 * 0.25 = $600
So, the correct answer is B. $600.
Finally, for Question 5:
Principal: $1,200
Rate: 4.5%
Time: 6 months (or 0.5 years)
Therefore, the total amount to be repaid is Principal + Interest = $1,200 + ($1,200 * 0.045 * 0.5) = $1,200 + $27 = $1,227
Hence, the correct answer is D. $1,227.
To find the interest, you can use the formula: Interest = (Principal * Rate * Time) / 100
Let's solve each problem step by step:
Question 1:
Principal: $400
Rate: 5%
Time: 1 year
Using the formula:
Interest = (400 * 5 * 1) / 100 = 20
So, the correct answer is B. $20.
Question 2:
Principal: $1,000
Rate: 8.5%
Time: 3 years
Using the formula:
Interest = (1000 * 8.5 * 3) / 100 = 255
So, the correct answer is A. $255.
Question 3:
Principal: $200
Rate: 9%
Time: one-half year (0.5 years)
Using the formula:
Interest = (200 * 9 * 0.5) / 100 = 9
So, the correct answer is A. $9.
Question 4:
Principal: $20,000
Rate: 12%
Time: 3 months (0.25 years)
Using the formula:
Interest = (20000 * 12 * 0.25) / 100 = 600
So, the correct answer is B. $600.
Question 5:
Principal: $1,200
Rate: 4.5%
Time: 6 months (0.5 years)
Using the formula:
Interest = (1200 * 4.5 * 0.5) / 100 = 27
The interest is $27, but the question asks for how much you will repay, which includes the principal. To calculate the total amount repaid, you need to add the interest to the principal:
Total Amount = Principal + Interest = 1200 + 27 = $1227
So, the correct answer is D. $1227.