Question
Ajay invested Rs.a in SI at 7% rate of interest per
annum for 9 years. Vishal invested the same amount in SI at 5% rate of interest per annum for 3 years and the difference between the interest obtained by Ajay and Vishal is Rs.2400. Find the amount invested by Vishal.Solution
According to question, => (a × 7 × 9)/100 – (a × 5 × 3)/100 = 2400 => 63a/100 – 15a/100 = 2400 => 48a/100 = 2400 => a = Rs.5000
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