waecmaths question:
If the simple interest on a sum of money invested at 3% per annum for 2½ years in N123. Find the principal
Option A:
N676.50
Option B:
N820.00
Option C:
N1,640.00
Option D:
N4,920.0
waecmaths solution:
$P=\frac{I\times 100}{T\times R}=\frac{100\times 123}{3\times \tfrac{5}{2}}=\frac{100\times 123\times 2}{3\times 5}=N1640$
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