In how many years a sum of money at 6 \frac{1}{4}% simple interest per annum would be 4 double?
WBBSE
Class X
Mathematics
Simple Interest
01 Mark
2023
Principal = P
rate = 6 \frac{1}{4}% = \frac{25}{4}%
Amount = 4P
Simple Interest (SI) = 4P – P = 3P
Time (t) = \frac{SI × 100}{\text {P × r}}
or, Time (t) = \frac{3p × 100}{\text {P × 25/4}} = 16 years
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