Commercial arithmetic: simple interest — KCSE Mathematics
KCSE Mathematics · 106 practice questions · 3 syllabus objectives
What You'll Learn
Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.
Define simple interest and apply the formula I = PRT/100 to calculate interest, principal, rate or time
Calculate the total amount after a period using A = P + I = P(1 + RT/100); solve for any one variable given the others
Commercial arithmetic: simple interest
Sample Questions
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A school invested Ksh 50,000 at a simple interest rate of 8% per annum. Calculate the interest earned after 3 years. (2 marks)
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Define simple interest and calculate the interest earned on Ksh 15,000 at a rate of 5% per annum over 3 years. (3 marks)
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A sum of Ksh 15,000 is invested at a simple interest rate of 5% per annum. Calculate the total amount after 3 years. (3 marks)
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Why Practise Commercial arithmetic: simple interest?
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