Question
Aman saves Rs. 5,800 in a bank at 9% simple interest for 4
years. If he gets back Rs. '2q' in total, calculate the product of digits of 'q'.Solution
ATQ,
Simple interest = Principal × Rate × Time ÷ 100
Interest earned = 5,800 × 9 × 4 ÷ 100 = Rs. 2,088
2q = 5,800 + 2,088
Or, 2q = 7,888
Or, q = 3,944
Required product = 3 × 9 × 4 × 4 = 432
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