JAMB 2024 Mathematics · Question 24
Find the amount if simple interest is paid yearly at 5% per annum for 3 years, on a principal of # 200,000.00
Options
- A.# 23, 000.00
- B.# 30,000.00
- C.# 300,000.00
- D.# 230,000.00
Answer: D. # 230,000.00
Explanation written with AI and checked against the answer key
Analysis
To solve this problem, we need to distinguish between Simple Interest and the Amount. The question asks for the "amount," which is the total sum of the principal and the interest earned over the given period.
Concept
- Simple Interest (SI) is calculated using the formula: $$ Where: • = Principal (the initial amount) = #200,000 • = Rate per annum = 5% • = Time in years = 3 years
- Amount (A) is the total value after the interest is added: $$
Step-by-Step Solution
Step 1: Calculate the Simple Interest
Step 2: Calculate the Total Amount
Conclusion
The total amount after 3 years is #230,000.00. This matches option D.
Exam Tip
Always read the question carefully to see if it asks for the Interest or the Amount. Many students calculate the interest (#30,000) and stop there, choosing option B by mistake. Remember: Amount = Principal + Interest.
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