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Find the simple interest rate percent annum at ... - JAMB Mathematics 2020 Question

Find the simple interest rate percent annum at which N1000 accumulates to N1240 in 3 years. 

A

6%

B

8%

C

10%

D

12%

correct option: b

I = \(\frac{PRT}{100}\) = 1 = 1240 - 1000 = 240

R = \(\frac{240 \times 100}{100 \times 3}\)

= 8% 

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