Question
A certain amount becomes three times itself in 20 years
at simple interest. What is the value of (6R - 8)?Solution
ATQ,
Let the principal be Rs. P.
Interest = 3P - P = 2P
Using SI formula:
2P = P × R × 20 ÷ 100
⟹ R = 10
Required value = 6 × 10 - 8 = 52
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