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Find the principal which amounts to N5,500 at a simple interest in 5 years at...

Mathematics
JAMB 2001

Find the principal which amounts to N5,500 at a simple interest in 5 years at 2% per annum.
  • A. N4,900
  • B. N5,000
  • C. N4,700
  • D. N4,800
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Correct Answer: Option B
Explanation
Principal, P = Amount, A - Interest, I.
A = P + I

I = (P.T.R)/100 = (P x 5 x 2)/100 = 10P/100 = P/10

But A = P + I,
=> 5500 = P + (P/10)
=> 55000 = 10P + P
=> 55000 = 11P

Thus P = 55000/11 = N5,000

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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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